
               MAI COMPANY CONFIDENTIAL FIELD INFORMATION BULLETIN
SERVICE GROUP(S): MINI                 MFG: BASIC FOUR

 NACS  TYPE(S): 4114,4125              MFG. MODEL(S): 2500,3000,4000,4114

CATEGORY: CPU                          DESC: 32 BIT MICROPROCESSOR

                   *** TABLE OF CONTENTS AS OF 09/23/96 ***                     

FIB 00001.2500/3000/4000 General Information ...(See FIB #52 for MAI 208/09/89
FIB 00002.Log on problems on ports configured as "vdt7270" - Rel 7.2 *08/05/87
FIB 00003.System serial number change information.....................01/25/95
FIB 00004.ERROR -32 during 'osinstall cs' after upgrade from 2000 to 302/19/87
FIB 00005.System hangs during power up................................02/27/87
FIB 00006.ERROR 17 or ERROR -262 on OPEN to a slave printer...........02/27/87
FIB 00007.How to run "dutil" on the 3rd and 4th Winchester disks......03/25/87
FIB 00008.1488 and 1489 Socket Locations For I/O Ports On CMB & 8-Way 09/30/93
FIB 00009.Power supply test points, TP 3 and TP 4 are labeled wrong...04/22/87
FIB 00010.Adding a fan is required for the Tandberg MCS drive.........09/03/87
FIB 00011.New firmware for MTCS controller required for Tandberg MCS d11/25/87
FIB 00012.New shipping material on MMB must be removed during installa04/27/87
FIB 00013.The TOPAZ UPS used on the 2000 is not to be used on the 300007/10/87
FIB 00014.Switch settings for 8-way and 4-way controllers.............05/20/87
FIB 00015.8-way "QUADPUS" cable - port identification information.....02/03/89
FIB 00016.CMB Board Switch and Jumper Settings........................09/01/88
FIB 00017.MMU PCBA has been replaced by the PMMU PCBA.................07/07/87
FIB 00018.System re-booting, incorrect start key operation, fails self07/29/87
FIB 00019.MMU errors in error log, system won't run BASIC programs....07/29/87
FIB 00020.Incorrect PCB thickness on some 8-ways......................10/16/87
FIB 00021.Connector J1 on some power supplies are too large causing br08/11/87
FIB 00022.Second and third disk drive installation information........04/24/89
FIB 00023.Command 'who' shows 'admin' logged onto unused terminal(s)..10/12/87
FIB 00024.Firmware correction for 4-way & 8-way self test problems....10/19/87
FIB 00025.Instructions for intermixing 4-Way and 8-Way controllers....12/01/87
FIB 00026.System with modem/mux attached hangs during boot............11/03/87
FIB 00027.ESCAPE key problem while in BASIC mode......................10/30/87
FIB 00028.3000/4000 power-on self test failures.......................11/11/87
FIB 00029.3000/4000 self-test fails, LED segment shows blinking '03'..11/11/87
FIB 00030.Cautions when changing CMB in BETA 4000 Systems.............11/16/87
FIB 00031.Exec won't accept "b4bus" password to install diags on disk.11/20/87
FIB 00032.Parity Errors During Boot...................................12/01/87
FIB 00033.UPS warning signal cable information........................03/16/90
FIB 00034.Terminal hang when opening R0 and LP [ WPS 407 ]............12/29/87
FIB 00035.Configuring unused ports on the MAI 3000/4000 [ WPS 412 ]...12/29/87
FIB 00036.Rear Panel Upgrade Kit for 3000 CCA, improves ESD and servic09/26/88
FIB 00037.New installation procedures for 2000/3000  [ WPS 422 ]......02/16/88
FIB 00038.New firmware CMBs 903631-001 & 903593-001  [ WPS 423 ]......03/18/88
FIB 00039.Paradyne Modem Configuration................................02/23/88
FIB 00040.Error 65....................................................03/07/88
FIB 00041.Diagnostics installation on hard disk.......................03/18/88
FIB 00042.Replacing 3rd artwork CMB with a 2nd artwork CMB............03/18/88
FIB 00043.Replacable battery on CMB...................................03/23/88
FIB 00044.Disk drive cable problems...................................03/23/88
FIB 00045.MAI 4000 Hardware Announcement [ WPSH 18A ].................10/17/88
FIB 00046.CMB shorting out on chassis standoffs [ WPSF 429A ].........06/01/88
FIB 00047.Terminal/System Hang on Release 7.2 O.S. [ WPSF 435 ].......03/28/88
FIB 00048.Crash Code 21 on Release 7.3 [ WPSF 436 ]...................03/28/88
FIB 00049.Slow running due to incorrect PMMU jumpering  [ WPSF 442 ]..04/18/88
FIB 00050.4000 System Hangs with >12 Meg - EIA change/SW Change  [ WPS11/02/88
FIB 00051.3000 System won't Run BASIC Programs........................06/23/88
FIB 00052.MAI 2500 General Information................................01/25/95

CPU-BASIC FOUR-2500,3000,4000,4114------------------Table Of Contents Pg01 of 02


FIB 00053.System Hangs during Boot/Port Hangs due to Modem Configurati08/06/88
FIB 00054.2000/3000/4000 LARL History [ WPSF 475R2 ]..................11/22/89
FIB 00055.Ports Lost when Removing 8/4 Ways and Rebooting the System..08/30/88
FIB 00056.EIA Transmission Parity Errs During Boot - 4000 at 7.4A.....08/30/88
FIB 00057.Phantom ERROR 3's...........................................11/21/88
FIB 00058.Crashes with codes 0, 30 & 45 and System Hangs..............11/30/88
FIB 00059.Error in 2500/3000 Service Manual...........................12/12/88
FIB 00060.New 1/2" Streamer Tape Controller (STC)  [ WPSF 487R ]......05/12/89
FIB 00061.Dump Report Form  [ WPSF 496C ].............................01/25/95
FIB 00062.Configuring the 2ND & 3RD Parallel Ports on a 4000  [ WPSF 505/12/89
FIB 00063.CAUTION... Possible Superblock Corruption while updating Dia06/09/89
FIB 00064.Controller Stack Support Bracket is now available for older 07/21/89
FIB 00065.SPx Systems 'Help' Key......................................08/01/89
FIB 00066.CMB board - problems during replacement/installation........08/08/89
FIB 00067.Power Supply Modification on 2000 to 2500 Upgrades..........10/12/89
FIB 00068.Problems adding Maxtor 380mb SCSI disk drive................02/01/90
FIB 00069.WDC.must have LARL of "P" to support greater than 8 MB of me10/25/89
FIB 00070.System time reverting to 00:00:00...........................11/01/89
FIB 00071.CMB Board appears to be DOA.................................04/04/94
FIB 00072.Improper format on Maxtor 380 MB SCSI disk using FAVI.......02/01/90
FIB 00073.SCSI Disk Installation Instructions  [ WPSF 567 & A1/2 ]....01/25/95
FIB 00074.Workaround for terminal hangs on OS release 7.5B............01/29/90
FIB 00075.SCSI Device Termination.....................................12/06/91
FIB 00076.EIA SWITCH SETTING CAUSES GARBAGE ON TERMINALS..............12/10/91
FIB 00077.Securing NVRAM ICs to CMB PCBAs.............................07/13/92
FIB 00078.REMOVING DIAGNOSTICS FROM SPX SYSTEMS.......................11/09/92
FIB 00079.Diagnostic errors on SCSI 760MB disk drive..................10/25/93
FIB 00080.Cable, Pinout for 4/8-way to modem cable with port set for t01/12/96


CPU-BASIC FOUR-2500,3000,4000,4114------------------Table Of Contents Pg02 of 02


FIB 00001                                                             08/09/89

    *** 2500/3000/4000 General Information ...(See FIB #52 for MAI 2500) ***

         !!!!!!!!!!  2500 General Information - See FIB # 52  !!!!!!!!!!

             ******  3000 and 4000 General Information  *******

 This F.I.B. group contains information regarding all hardware in the CPU
enclosure EXCEPT I/O devices (i.e. floppy disk drive, 1/4" streamer tape, fixed
disk drive). For information on an I/O device, consult the F.I.B. group for that
device.

 Software information will be located in the Software section in the F.I.B.
group "BOSS/IX,BBVI". If a software problem produces symptoms that appear to be
a.hardware problem, that software problem will be covered in a F.I.B. in the CPU
group.

Microprocessor Unit.........Motorola 68020 (32 bit) with co-processor.

Hard Disk Drives............Up to three Winchester drives of 44MB, 71MB or 120MB
                            all contained within the CPU cabinet.
                            (4000 system may have up to 7 disk drives).

Serial I/O channels.........2 to 34 asynchronous, bidirectional EIA RS-232 ports
                            (one port may be synchronous). Two serial ports are
                            located on the CMB. All others are on 4-ways or
                            8-ways with a maximum of 4 serial controllers.
                            (4000 system may have up to nine 8-ways.)

Parallel I/O channels.......One 8-bit output channel for connection to any plug-
                            compatible printer with Centronics interface.
                            (4000 systems have two additional parallel ports
                             on the EIA interface board)

Tape.I/O channels...........One MCS (standard) or one MTS (optional). The MCS is
                            contained within the CPU cabinet.

Main Memory.................1 to 6 MB, in 1MB increments; 256 X 1 dynamic RAM;
                            Word length: 32 bits; access time: 150 ms
                            (4000 System may have up to 16 MB)

                   ***** 4000 GENERAL INFORMATION *****

The MAI 4000 system is designed as an expansion of the MAI 3000. The addition
of an Expansion Chassis allows the MAI 4000 to add more terminals and hard
disks. Most of the device controllers and peripherals are compatible between
the MAI 2000, 3000 and the 4000. All application software available on the MAI
2000/3000 will run unchanged on the MAI 4000.

The MAI 4000 system is available as a complete new system with dual cabinets
as well as an upgrade from the MAI 3000 (with the addition of the expansion
cabinet).

The 3000 to 4000 Upgrade Kit main components are the Expansion Cabinet, the
Expansion Interface EIA board, and the Expansion Interface EIB board.
After the upgrade kit is installed, the system will consists of two cabinets
side by side, mechanically attached to each other with a hinge at the rear of

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB001 Pg001

the cabinets.

The MAI 4000 requires a new style CMB board (Artwork #3). Artwork # 2 shipped
with the 3000 systems before October 1987 will not work. A CMB Upgrade Kit is
available from MBF Marketing for systems with serial numbers 3000-82599 or
lower.

The 4MB Memory board is a new board released to allow the 4000 memory to
increment from 8MB (minimum) to 16MB (maximum). The new 4MB memory board may
be used with existing 1MB boards.

Base       Expansion
Cabinet    Cabinet       4000 New Boards and Assemblies:

   x                     CMB board Artwork # 3                               
   x                     4MB Memory Boards.
   x                     Expansion Interface Board EIA with 2 parallel ports.
              x          Expansion Interface Board EIB

Base       Expansion
Cabinet    Cabinet       4000 Existing Boards and Assemblies:

   x          x          Power Supply
   x          x          Single Board Hard Disk Controller
   x          x          8-way and 4-way terminal controllers.
   x                     1/4" streamer cartridge controller.
   x                     1/2" tape drive adapter.
   x                     Lan Controller.

     ***** 3000 AND 4000 NACS MACHINE TYPES AND FEATURE NUMBERS *****

NACS     MBF    DESCRIPTION
----     ----   ------------------                                           
4116     4014   MAI 3000 System, single cabinet.
4449     4014   MAI 4000 System, dual cabinets.

MAI 4000 MARKET CODES:

Market   Description
Code:
------   --------------------------------------------------------------------
AV001AA  MAI 4000, 8MB RAM, 2-160MB drives, 34 Serial ports, 3 parallel ports.
BE003AA  3000 to 4000 Upgrade Kit, w/MCS Front Panel
BE004AA  3000 to 4000 Upgrade Kit, w/Blank Front Panel
GB047AA  4MB RAM Board
AN004AA  CMB Upgrade (required if 3000 ss# is 82,599 or below)

                ***** 3000 and 4000 SOFTWARE INFORMATION *****

The MAI 4000 system requires BOSS/IX release 7.4A or higher.
The MAI 3000 system uses BOSS/IX releases 7.3A and 7.4A or higher.

A configuration record is required during Operating System installation, and
an SSN tape is required to write the system serial number in the CMB.

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB001 Pg002

                      *** AVAILABLE DOCUMENTATION ***

     DESCRIPTION                  B/4 NUMBER                NACS  NUMBER     
-------------------------------------------------------------------------------
Sorbus Environmental Handbook ................................S-HDBK-027
MAI 3000 Service Manual............M8108......................S-HDBK-???
MAI 4000 Service Manual............M8205A.....................S-HDBK-???
MAI 3000 Diabnostics and Error Log Manual....M6204............S-HDBK-???

                           *** AVAILABLE TRAINING ***

              See the current Education Guide for class schedules.

                              *** SPECIAL TOOLS ***

               DESCRIPTION                                PART NUMBER
---------------------------------------------------------------------
MAI 3000 SSN installation tape cartridge.....................MM538185
MAI 3000 SSN installation tape reel..........................MM538186
MAI 3000 SSN PAL chip........................................MM538181
Loopback plug, 1 port, 4-way.......B/4 907529-001............MM538040
Loopback cable, 2 port, 4-way......B/4 907530-001............MM538050
Loopback plug, parallel prtr port..B/4 907588-001............MM538060

 NOTE: The above SSN tapes will work only on system at or below OS release 7.2.
       See other FIBs for procurement of the SSN tapes required for OS releases
       7.3A and above.

                   *** SPECIAL ADMINISTRATIVE PROCEDURES ***

For lock and key authorization phone numbers and hours of coverage reference
FIB 00005 in the General, Basic Four, Administrative Procedures FIB group.   

***NOTE*** IF UPGRADING A 2000 TO A 3000 A PRE-SITE SURVEY MUST BE DONE!
           THE PRE-SITE SURVEY FORM CAN BE FOUND IN THE WPS SOFTWARE BULLETIN
           NUMBER 145. THE HARDWARE SWITCH SETTINGS, JUMPER SETTINGS AND CABLE
           DIAGRAMS ARE CONTAINED IN THE SAME BULLETIN. ALSO, BE AWARE THAT
           THE LARLs SPECIFIED IN THE WPS BULLETIN 145 MAY BE OUT DATED! USE
           THE LATEST PUBLISHED LARL LIST FOR THE 4116.

           ***** 3000 and 4000 SPARE PARTS INFORMATION *****

See FIB # 52 for SPx Spare Parts Lists.

ORIGINATOR: JAVIER VAN OORDT

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB001 Pg003

FIB 00002                                                             08/05/87

    *** Log on problems on ports configured as "vdt7270" - Rel 7.2 * 18 ***

SYMPTOM: On serial ports configured as vdt7270 difficulty in logging on or can
not log on in multi-user mode.

PROBLEM DETERMINATION: Press CR/RETURN or CTL C. If cursor moves to the lower
left of the screen and the terminal locks up - or - a part of the log-on screen
prints but doesn't complete. Either of these things can occur on ports that are.
configured as vdt7270.

FIX: Perform a normal boot of the system. At the ADMIN> prompt enter the
following:
                     ved /etc/ttymntbl/vdt7270.mntbl  (CR)

The file will be displayed with the cursor over the first character of the first
line which is a "d" (delay). Use CTL F to move the cursor to the 0 in 01 on this
line. Now, using the CTL D key and 0 key change the 1 to a 0 so the line reads
00 instead of 01. Now press CTL C, answer Y to save the change.

RE-BOOT

At the ADMIN> prompt enter the following:

                    makettymntbl /etc/ttymntbl/vdt7270 (CR)

RE-BOOT and test the previously failing ports for proper operation.

ORIGINATOR: H. MITCHELL

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB002 Pg001

FIB 00003                                                             01/25/95

                *** System serial number change information ***

 The media containing the 'ssn' software has the following part numbers:
 MM538185       1/4" cartridge tape (MCS)
 MM538186       1/2" reel tape      (MTS)

                                  *** NOTE ***
         The ssn tapes shown above will work ONLY on systems running OS
         releases below 7.3. They WILL NOT work on OS release 7.3 and up.

SSN tapes for 7.3 & later releases can be obtained for formally trained
personnel from Software Distribution

 To install an SSN on the MAI 3000, first power down the system and install the
security PAL (P/N MM538181, MBF P/N 911005-082) in location 20F. Next, power on
the system. At the BOOT MENU, enter option 2, ALT LOAD. The system will display:

 Boot device:

 At this point load the media that contains the 'ssn' program in the appropriate
device and type in the device name (e.g. 'cs' for MCS tape or 'ts' for MTS   
tape).

 The next input the system will request is:

 System file:

 Type in lower case 'ssn' <RETURN>

 The system will then boot from the selected tape.

 If the load fails, the following message will be displayed:

 Error during load of <ssn>
 The BOOT MENU will then be re-displayed.
 If the load is successul, a Boot Complete message is displayed followed by:

 NVRAM System Serial Number Update Program Rev A2

 Current Serial Number   : 3xxx-xxxxx (read from the NVRAM)
 New Serial Number       : 3

 Enter a properly formatted serial number (only numeric values with a dash '-',
in the fourth position are accepted), terminated by a <RETURN>.

 The system will now display:

 Lock value              : xxxxxxxx
 Enter key               :

 At this point call Basic Four for the authorization key. Refer to FIB 5 in the
General, Administrative Procedures, Basic Four FIB group for phone numbers
and hours of coverage.

 The only people that MAI Basic Four will issue an authorization key to are
those who have signed and returned the Non-Disclosure forms. MAI Basic Four is

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB003 Pg001

maintaining a list of these people and will not issue a key to anyone not on the
list.

 Enter the correct 8 alpha numeric characters, received from an authorization
center, terminated with a <RETURN>.

 If the key is incorrect, the following message is displayed:

 FAILURE TO ENTER THE CORRECT KEY
 Then the BOOT MENU is displayed.

 If the key is correct, the following is displayed:
 NVRAM Serial Number update complete
 Then the BOOT MENU is displayed.

NOTE: At this time the system should be powered down and the security PAL
removed and replaced with the PAL that was removed from location 20F.

ORIGINATOR: W. MOORE

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB003 Pg002

FIB 00004                                                             02/19/87

    *** ERROR -32 during 'osinstall cs' after upgrade from 2000 to 3000 ***

SYMPTOM: An ERROR -32 can occur during the installation of the o.s. after
a field upgrade of a 2000 system to a 3000 system, using the 2000 system's   
original disk drives. The error message says the SUPERBLOCK Has a problem.

FIX: Check the revision of the winchester disk controller. The LARL for this
board on the 3000 is revision 'R'.  If the controller is below revision 'R' you
must install a disk controller at or above revision 'R' and re-format the hard
disk(s).

ORIGINATOR: H. MITCHELL

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB004 Pg001

FIB 00005                                                             02/27/87

                      *** System hangs during power up ***

 A problem with systems hanging or freezing at power up has been found
 loading the MAI 3000 System with 2 MB of memory and two system disk.
 If you encounter this problem ensure that your disk controller P/N
 903496-001/002 is at least a revision level (R) or above.

ORIGINATOR: C. FIGUEROA

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB005 Pg001

FIB 00006                                                             02/27/87

           *** ERROR 17 or ERROR -262 on OPEN to a slave printer ***

 When a slave printer is configured on the 3000 with Level 7.2C
 spooling set to 'yes' in the '/etc/defaults' file.  This will cause
 a BASIC error code 17 when the printer is OPENed.  The command level
 error will be -262.

 To correct this change spooling to 'no' in the entry for the printer in
 the '/etc/defaults' file.  This can be done by going to the 'pparams'
 utility and modifing the default file for 'ln', where 'n' equals the
 printer number.

ORIGINATOR: W. MOORE

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB006 Pg001

FIB 00007                                                             03/25/87

         *** How to run "dutil" on the 3rd and 4th Winchester disks ***

 At the time the system gives you the "dutil" prompt enter the following:

                           wdc 1 <RETURN>

 This will select the 2nd controller, drives 0 and 1 for diagnostic activity.

ORIGINATOR: W. LUSSMIER

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB007 Pg001

FIB 00008                                                             09/30/93

   *** 1488 and 1489 Socket Locations For I/O Ports On CMB & 8-Way PCBA'S ***

Refer to SPX HANDBOOK FIB 9 (8-WAY controller FIB) for driver/receiver IC
locations.

ORIGINATOR: Norm Jones

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB008 Pg001

FIB 00009                                                             04/22/87

       *** Power supply test points, TP 3 and TP 4 are labeled wrong ***

The test points on the power supply of the MAI 3000 system (TP 3) and
(TP 4) have the wrong reading.  This is due to an error on the Silk
Screen.   TP 3  is labeled as +12 v, but is the +5 v and TP 4 is
labeled as +5 v, but is the +12 v.

This problem is only seen on the first and second artwork of the
control module PCBA 903558 of the power supply.  On these (2) artworks
the part number of the PCB'S are:

     1.  904963-001       Rev.   X 1

     2.  904963-001       Rev.   X 2

The third artwork PCB 905257-xxx corrects this problem.                      
ORIGINATOR: C. FIGUEROA

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB009 Pg001

FIB 00010                                                             09/03/87

          *** Adding a fan is required for the Tandberg MCS drive ***

 A second fan is mandatory for all MAI 3000 systems because of the new
MT 4406.  This change is to prevent the tape drive from over-heating.
This change should be made at the next service call.  Attached is a
copy of the ECN # 11916 which explains installation and the parts
required.

The MAI Basic Four part number for the kit is C916123-001.

The Sorbus part number for the kit is MM535046.

DRAWING INFORMATION: See Worldwide Product Support Field Bulletin 318 hardcopy
                     for the ECN # 11916 details.

ORIGINATOR: C. FIGUEROA

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB010 Pg001

FIB 00011                                                             11/25/87

    *** New firmware for MTCS controller required for Tandberg MCS drive ***

A new firmware for the MTCS controller is now available.  This new
firmware is needed to support the new MT 4406 tape drive.

The rework on the board is done as follows:                                  

o   Remove prom MBF part number 165047-044 location 4-N.

o   Replace with prom MBF part number 165047-086 (MM531071).

o   Change part number on the controller to:  903406-002.

RESTRICTIONS:

o   DO NOT USE THE NEW FIRMWARE ON CONTROLLER 903406-002
    IF USING  O.S. LEVEL 7.2 C.

o   NEW FIRMWARE AND CONTROLLER 903406-002 WILL WORK
    WITH THE; MT 4403  &  MT 4406.

ORIGINATOR: C. FIGUEROA

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB011 Pg001

FIB 00012                                                             04/27/87

    *** New shipping material on MMB must be removed during installation ***

Manufacturing currently applies a strip of antistatic masking tape
across the body of the MMB and CMB.  They will be discontinuing this
operation and will begin to secure the MMB onto the CMB using ty-wraps
and cardboard squares.  This is only required during product shipment        
and MUST be removed during installation to prevent damage to the MMB.

The MMB is located on the component side of the CMB at the top near
the middle.

ORIGINATOR: W. MOORE

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB012 Pg001

FIB 00013                                                             07/10/87

      *** The TOPAZ UPS used on the 2000 is not to be used on the 3000 ***

 The TOPAZ Uninterruptable Power Supply (MM533070)  used on the 2000 system is
rated at 400 VA capacity. This is not adequate to sustain operation on the 3000
system which requires an UPS with a 1000 VA capacity.

          Order part number MM535075 when UPS replacement is required.

ORIGINATOR: N. JONES

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB013 Pg001

FIB 00014                                                             05/20/87

            *** Switch settings for 8-way and 4-way controllers ***

The following should be followed when addressing 8-Ways with 4-Ways          
on a 3000 system.

It is recommended that the 8-Way be in the slot next to the CMB              
followed by the 4-Ways.  The 8-Way controller counts only as (1) PCBA.

This chart will demonstrate the proper locations for the controllers.

                    / 4 th --------- 8-WAY or 4-WAY PCBA
BOARD ADDRESS  ___ /  3 rd --------- 8-WAY or 4-WAY PCBA
                   \  2 nd --------- 8-WAY or 4-WAY PCBA
                    \ 1 st --------- 8-WAY                                   
                      CMB PCBA

o  8-Way Controller PCBA Switch Settings (SW-1)

-------------------------------------------------------------------------------
BOARD # | S1-1 | S1-2 | S1-3 | S1-4 | S1-5 | S1-6 | S1-7 | S1-8 | S1-9 | S1-10
--------|------|------|------|------|------|------|------|------|------|-------
   1    | ON   | OFF  | ON   | OFF  | OFF  | OFF  | OFF  | ON   | ON   | ON
--------|------|------|------|------|------|------|------|------|------|-------
   2    | OFF  | OFF  | ON   | OFF  | OFF  | OFF  | ON   | ON   | ON   | ON
--------|------|------|------|------|------|------|------|------|------|-------
   3    | ON   | ON   | OFF  | OFF  | OFF  | ON   | OFF  | ON   | ON   | ON
--------|------|------|------|------|------|------|------|------|------|-------
   4    | OFF  | ON   | OFF  | OFF  | OFF  | ON   | ON   | ON   | ON   | ON
-------------------------------------------------------------------------------

o  4-Way Controller PCBA Switch Settings (SW-1)

-------------------------------------------------------------------------------
BOARD # | S1-1 | S1-2 | S1-3 | S1-4 | S1-5 | S1-6 | S1-7 | S1-8 | S1-9 | S1-10
--------|------|------|------|------|------|------|------|------|------|-------
   1    | ON   | OFF  | OFF  | OFF  | OFF  | OFF  | OFF  | ON   | OFF  | ON
--------|------|------|------|------|------|------|------|------|------|-------
   2    | ON   | OFF  | OFF  | ON   | OFF  | OFF  | OFF  | ON   | OFF  | OFF
--------|------|------|------|------|------|------|------|------|------|-------
   3    | ON   | OFF  | OFF  | ON   | ON   | OFF  | OFF  | OFF  | ON   | ON
--------|------|------|------|------|------|------|------|------|------|-------
   4    | ON   | OFF  | OFF  | ON   | ON   | ON   | OFF  | OFF  | ON   | OFF
-------------------------------------------------------------------------------

ORIGINATOR: C. FIGUEROA

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB014 Pg001

FIB 00015                                                            02/03/89

        *** 8-way "QUADPUS" cable - port identification information ***

 The following will help to identify which 8-way port is connected to which
"pigtail" connector on the 8-way "QUADPUS" cable:

                          8-way    8-way        QUADPUS
                          Port     Connector    Cable End
                          -------------------------------
                            0      J4 (LOWER)      PB
                            1      J4 (LOWER)      PC
                            2      J4 (LOWER)      PD                        
                            3      J4 (LOWER)      PE                        

                            4      J3 (UPPER)      PB
                            5      J3 (UPPER)      PC
                            6      J3 (UPPER)      PD
                            7      J3 (UPPER)      PE

ORIGINATOR: H. MITCHELL

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB015 Pg001

FIB 00016                                                             09/01/88

                  *** CMB Board Switch and Jumper Settings ***

JUMPER  AND SWITCH SETTINGS FOR:

        3000 CMB BOARD A/W 2, P/N MM535025/903593-001
   3000/4000 CMB BOARD A/W 3, P/N MM537025/903631-001

This F.I.B. contains information to set jumpers and switches on the two types
of CMB boards available in the 3000 systems. It supplements the MAI 3000
Service Manual (M8108A) which contains errors on pages 2-10 and 2-13 in
the jumper settings of the CMB II board.

***** JUMPERS TO CONTROL THE SERIAL PORTS *****

Serial Ports on boards 903593-001 and 903631-001 are set exactly the same.

Jumpers 29A, 28C, 26B, and 29B are zero-ohm-packs where the orientation of the
zero-ohm-packs determine the configuration of the serial ports A and B.      

Jumpers 29A, 26B and 29B are inserted in standard dip sockets with standard
numbering system.

Jumper 28C is inserted in special socket 28C that occupies two locations, 28C
and 29C, and will be referred to as 28/29C.

Socket 28/29C has a unique 3-row configuration, see diagram below:

   Socket 28/29C viewed from the rear:

     17                        24                                            
        o  o  o  o  o  o  o  o                                               
                                         Row 28
      9                        16
        o  o  o  o  o  o  o  o                                               
                                         Row 29
      1                         8
        o  o  o  o  o  o  o  o                                               

               Column C

NOTE: Row of pins 17 to 24 is not used at the present time.

The serial ports jumpers should be set as follows:

SERIAL PORT A:

            Modem                                    Terminal/Printer

  Pin 1 of the zero-ohm-pack is            Pin 1 of the zero-ohm-pack is     
  inserted in pin 1 of socket 29A.         inserted in pin 9 of socket 29A.

SERIAL PORT B - RS 232

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB016 Pg001

              Modem                                    Terminal/Printer

  Pin 1 of the zero-ohm-pack is            Pin 1 of the zero-ohm-pack is     
  inserted in pin 1 of socket 28/29C       inserted in pin 16 of socket 28/29C.

  Pin 1 of the zero-ohm-pack is            Pin 1 of the zero-ohm-pack is     
  inserted in pin 1 of socket 26B          inserted in pin 1 of socket 26B   

  Nothing in 29B                           Nothing in 29B                    
SERIAL PORT B - RS-422 (X.21)                                                
  Pin 1 of the zero-ohm-pack is
  inserted in pin 9 of socket 28/29C

  Pin 1 of the zero-ohm-pack is
  inserted in pin 1 of socket 29B

  Nothing in 26B

***** JUMPERS TO CONTROL MISCELLANEOUS FUNCTIONS *****

Standard settings for both boards 903593-001 and 903631-001:

JMP 1-2                             JMP 24-25 (24-25 NMI-dumps, 25-26 reset)
JMP 3-4                             JMP 29-30
JMP 6-7                             JMP 31-32
JMP 12-13 (may be Hard wired)       JMP 33-34
JMP 14-15 (may be Hard wired)       JMP 36-37
JMP 16-17 (may be Hard wired)       JMP 39-40
JMP 18-19 (may be Hard wired)       Jumper at location 12H: 4-11

For MMB (board)    JMP 50-52                                                 

For PMMU (IC)      JMP 50-51

For board 903631-001 only:  JMP 47-48

NOTE: All jumper locations not listed above should be left open.

***** DIP SWITCH SETTINGS *****

DIP Switch at location 17H:

   Normal setting: position 9 to ON all others to OFF.

   Special settings: positions 1 to 8 are used for special functions and
                     diagnostics, consult Service Manual, page 2-14.

ORIGINATOR: JAVIER VAN OORDT

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB016 Pg002

FIB 00017                                                             07/07/87

              *** MMU PCBA has been replaced by the PMMU PCBA ***

The MMB PCBA (Memory Management Board) on the MAI 3000 CMB PCBA has been
replaced by the PMMU (Paged Memory Management Unit).

The MMB and PMMU are interchangable.                                         

The MBF part number for the PMMU is:  162079-001.                            
Please note the following when replacing the PMMU:

A.  Jumper on location S - 17 on the CMB PCBA should be set at
    points 50 and 51 when the PMMU is present.

B.  The PMMU diagnostics test (2) Write/Read/Compare Registers on
    7.2C and 7.2D fails. (Ignore error) The 7.3A diagnostics does
    not fail this test.

C.  Pin (1) of the PMMU chip is located on the lower left corner
    whereas pin (1) of the CPU chip is located on the lower right
    corner.

Example:
                          CMB BOARD

_________________________________________________________________
|                                                               |            
|      _____________________         ______________________     |
|      | _________________ |         |  _________________ |     | P
|      | |    ________   | |         |  |    ________   | |     | o
|      | |    |      |   | |         |  |    |      |   | |     | w
|      | |    | PMMU |   | |         |  |    | MMB  |   | |     | e
|      | |    |______|   | |         |  |    |______|   | |     | r
|      | |___            | |         |  |            ___| |     |            
|      | |1_|____________| |         |  |____________|_1| |     | S
|      |___________________|         |____________________|     | u
|                                                               | p
|         68851 Processor                68020 Processor        | p
|                                                               | l
|                                                               | y
|                                                               |___
|_______________________________________________________________|
|                              |                                |
|        Memory Boards         |          Controllers           |
|                              |                                |
|                              |                                |
|______________________________|________________________________|

ORIGINATOR: C. Figueroa

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB017 Pg001

FIB 00018                                                             07/29/87

   *** System re-booting, incorrect start key operation, fails self-test ***

 The symptoms shown above can be caused on recently installed systems by a
manufacturing problem:

 The vendor supplying the 1 meg memory PCBAs has released an undetermined
number of PCBAs on which the leads were not clipped off of the components
installed on the board.

 The leads are long enough to extend into and short against the connections
at the top of the front panel cable connector which is plugged into the CMB
at a point adjacent to the memory PCBAs.

 On recently and near-future installs, remove the memory PCBAs and check for
the long leads condition. If you find this condition, do not replace the PCBAs,
instead, clip the leads as close to the PCBA as possible and re-install.

ORIGINATOR: H. Mitchell

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB018 Pg001

FIB 00019                                                             07/29/87

        *** MMU errors in error log, system won't run BASIC programs ***

SYMPTOM: There have been several occaisions where systems will run all
         diagnostics error free and perform all functions properly - except the
         system wil intermittantly or solidly fail to run BASIC programs.
         At the time of failure, the task may post an ERROR -5 or simply drop
         from BASIC mode back to an 'admin' prompt.

PROBLEM DETERMINATION: All details are not know at this time, but it presently
         appears that this problem is associated only with CMBs which have the
         new PMMU installed. Also, the error log will most likely show MMU
         and/or CMB errors.

FIX: Replace disk drive WD0. Re-formatting will not fix this problem nor will
     re-installing the O.S. or EBS product.

                                  *** NOTE ***

 If you encounter this problem prior to 10/01/87, please contact:

                        Harvey Mitchell (National Support)
                        Phone No. (817) 451-9551

ORIGINATOR: H. Mitchell

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB019 Pg001

FIB 00020                                                             10/16/87

                 *** Incorrect PCB thickness on some 8-ways ***

There are a number of boards out in the field that have incorrect
dimensions (thickness) on the 8-way controller (PCBA 903577-001).
The recommended dimension is .064 inches.  The incorrect dimension is .075   
inches.

It is more noticeable when the controller is inserted on any of
the two slots closest to the CMB board.  When installing or servicing
check for these dimensions.  If the dimension is incorrect, send the
board back for replacement through your normal procedures.                   

These are the Date Codes on the 8-way controller to watch for:

1.  8644
2.  8648
3.  8706

NOTE: PCBs with date code 8706 and a scribed line below the original date
      code have been inspected and are the correct thickness.

ORIGINATOR: C. Figueroa

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB020 Pg001

FIB 00021                                                             08/11/87

   *** Connector J1 on some power supplies are too large causing breakage ***

There are about 50 units out in the field that have connector J1 on the
power supply too large.  Connector J1 is located on PCB part number
904951-001 of the power supply (P/N 907897-001/-002).                        

Only PCB 904951-001 ASSY 903560-001/-002  has connector J1 wider than
connector J6 on CMB PCBA 903593-001 or 903631-001.

To prevent possible failure of the power supply or a cracked connector,
it is necessary to measure the output PCBA connector J1 and file or          
grind as specified in the drawing in WPS bulletin 359.

DRAWING INFORMATION: See Worldwide Product Support Bulletin #359 hardcopy
                     for drawing detail

ORIGINATOR: C. Figueroa

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB021 Pg001

FIB 00022                                                             04/24/89

          *** Second and third disk drive installation information ***

                                    **NOTE**
NACS personel may find that SPx HAndbook FIB 27 more complete than this
bulletin.

I.  HARDWARE  SET-UP

For cabling part number and connections for the 2nd/3rd disk drive
see figure 4.  To install the third drive, it will be necessary              
have a 903496-002 disk controller.  Make sure that PAL at location
1J is a 911017-007 and that JUMPER A is set for 2-3 .

The 3rd drive address switch should be set as unit 0 and must
have a Terminator Resistor Pack.

To access the third drive from DUTIL you must specify the controller
number by typing  wdc 01 .

II.  SOFTWARE  SET-UP

For the system to be able to recognize the third disk drive two
device files must be created.

o  ADMIN> makedev  /dev/wd2   B 14 64
o  ADMIN> makedev  /dev/rwd2  U 14 64

To enable the system to utilize the full capacity of the 2nd/3rd
disk drive the superblock must be modified and a filesystem must
be installed on the drive.

To change the superblock on drive (X) to reflect two partitions,
the following steps must be taken.  Please refer to the Command
Manual section of the User's Guide for full details on each                  
command.

Where (X)= Drive number

o  ADMIN> usb /dev/rwd(X) -get desc=drive(X)

"drive(X)"  is an arbitrary name we assigned to a file, in this
example, to store the contents of the superblock of the third hard
disk.

o  ved the file, /etc/diskdesc/drive(X).

Find the line:

**partition # : starting block : length in blocks

Move the cursor down one line, do ^k's to erase any other lines
and add the line:

1:0:-1                                                                       

Save the file with the new edits.                                            
o  ADMIN> usb /dev/rwd(X) -save -set type=drive(X)

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB022 Pg001

This command updates the superblock on drive(X) with the parameters
described in /etc/diskdesc/drive(X).

o  ADMIN> makedev /dev/rdrive1   U 14 33
                                            ------  DRIVE 1
   ADMIN> makedev /dev/drive1    B 14 33

o  ADMIN> makedev /dev/rdrive2   U 14 65
                                            ------  DRIVE 2
   ADMIN> makedev /dev/drive2    B 14 65

These two commands create the unbuffered raw device and the buffered
device.  The names of the devices used here are called drive1-2 and
rdrive1-2 but can be defined using other names.  To follow convention,
the unbuffered device should begin with the letter "r" which stands
for raw device.

o   ADMIN> makefs /dev/rdrive(X)

Once the device has been defined, a filesystem is created using the
makefs command.

o   Verify that the drive has been correctly partitioned by using the
    "space" command.  The number of blocks returned should reflect the
    size of the hard disk installed.

ADMIN> space /dev/rdrive(X) 

o   To access the newly installed hard disk, the device must be
    mounted to a directory on drive 0.  It is recommended that the
    /mnt directory not be used for this purpose.  Create a new
    directory to be used as a mount point for the new drive.
    (e.g.  /mntwd(X) )

ADMIN> makedir /mntwd(X)

o   So that the customer will have access to the new drive each time
    they load their system,  ved the  /etc/sinit file and add the
    following line at the end of the file:

mount /dev/drive(X)  /mntwd(X)                                               

Save the edited file.  Each time the system is loaded the file is
executed and drive(X) will be mounted to /mntwd(X).  Again
"drive(X)" and "mntwd(X) are arbitrary names: Where (X)=Drive
Number.

o   When the customer wishes to use the new drive they need to prefix
    /mntwd(X) to their path name.

NOTE:   The devices /dev/drive(X) and /dev/rdrive(X) also need to be
        added to the boot partition.  This is done by booting to the
        boot and using the makedev command as described earlier in this
        bulletin.

ORIGINATOR: C. Figueroa

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB022 Pg002

FIB 00023                                                             10/12/87

       *** Command 'who' shows 'admin' logged onto unused terminal(s) ***

A condition has been reported from the field, that just after system         
boot the 'who' command and 'ps' command shows 'admin' logged in at
another terminal or terminals.  These terminals are usually
connected to a modem.  This should not be viewed as a problem since
system security has not been violated; to log on to the system will
still require an Operator ID and Password (if required).

The reason that 'admin' shows logged in is that when an <escape> or
^C is entered at the Escape prompt, admin is called to execute the
'/bin/login' command.  This is the command that prompts for the
operator ID and password.  In some cases, a modem will produce oneof
these characters which in turn calls admin to run '/bin/login'.

If this is a problem for your customer, the work around is to turn off
the modem during system boot.

ORIGINATOR: W. Moore

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB023 Pg001

FIB 00024                                                             10/19/87

        *** Firmware correction for 4-way & 8-way self test problems ***

A new firmware is available to correct a specific problem on the 4-way
and 8-way controllers.

PROBLEM:

At power on, as part of each controller self test, data output from
Serial Communication Controller (SCC) ICs were internally looped back.
The SCC data out-puts were disabled from going to the serial line by
hardware.  The disabling action was causing a NULL character
inadvertently sent out to the line which, on DIABLO interface type
printers would cause a garbage character (`?') printed.

RESOLUTION:

The new firmware resolve this problem by not performing SCC data loop
back test as part of the self test.  In addition, the 8-way controller
fixes minor problems related to abnormal conditions.

The ECN number for the 4-way controller is 12276.
The ECN number for the 8-way controller is 12266.

DRAW INFORMATION: See WPS hardware bulletin #374 for detail.

ORIGINATOR: Carlos Figueroa

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB024 Pg001

FIB 00025                                                             12/01/87

        *** Instructions for intermixing 4-Way and 8-Way controllers ***

SYMPTOM:
 When upgrading or adding 8-way controllers to a 3000 where they previously
had 4-ways, you must print out the terminal configuration then delete each      
port except for the CMB ports, then "shutdown" and "reboot".
 Using the printout, add all of the original ports plus the new ones. If you
don't follow this precedure and simply add new ports in the configuration file
and new boards, the system will look at the 8-way as being a 4-way, and you will
not be able to configure or use the last four ports.

FIX: The order is this:

        1. Printout terminal configuration file.                                
        2. Delete all ports except CMB ports.                                   
        3. Shutdown system and replace 4-ways with 8-ways or add 8-ways.        
           (Address 8-ways first, then 4 ways. Ref. FIB #14)                    
        4. Reboot and enter original ports plus new ones.                       
        5. Shutdown and reboot system.                                          

ORIGINATOR: Jim Dobson & John Tank

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB025 Pg001

FIB 00026                                                             11/03/87

            *** System with modem/mux attached hangs during boot ***

 New MDS PROMs, Level 2.7, have been released for the MAI 3000.  These new PROMs
correct a problem where the system will hang during the boot when a MODEM/MUX is
attached to any 8-way PORT 0.  The hang will occur before the system self-test.

 The implementation code for this release is 6A, that is, the PROMs should be
replaced on the next service call.

REWORK INSTRUCTIONS:

ASSEMBLY                           BOARD DETAIL
----------------------------------------------------------------             
903593-001 32 BIT CMB              905213-001
903631-001 32 BIT CMB              905216-001

Remove I.C.                        Replace I.C.
MBF Part Number     Location       MBF Part Number     MM Number
----------------------------------------------------------------             
165057-013            9H           165057-017          MM535126
165057-014            7H           165057-018          MM535127

ORIGINATOR: W. Moore

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB026 Pg001

FIB 00027                                                             10/30/87

                 *** ESCAPE key problem while in BASIC mode ***

 A condition has been found where the ESCAPE key on the MAI 2000/3000 is lost in
BASIC.  This condition is generated when an error occurs and the error handling
logic causes a tight program loop.  Since the loop is so tight, the ESCAPE is
not seen and the condition gives the appearance that the terminal is locked.

An example of this would be:

    00100 READRECORD(1,KEY="ABC",ERR=00100)A$

Where the KEY is missing.

Another example would be:

00100 SETERR 00100

200 X=I/B

Where B=0  (which sets an invalid divide by 0 condition)

 Presently there is no work around for this condition.  If your program gets in
this condition use the 'ps -a' command to find the task executing and then use
the 'kill' command to kill the BASIC task.  This will bring your terminal back
to the Log-on screen.  It's recommended that you use a SETTRACE to troubleshoot
terminal hang problems.

This condition will be corrected in 7.4A.

ORIGINATOR: W. Moore

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB027 Pg001

FIB 00028                                                             11/11/87

                 *** 3000/4000 power-on self test failures ***

SYMPTOM:

 System hangs on standoff, led segments show nothing or a "C".

FIX:

 The chassis for the 3/4000 system has a metal standoff to support the back
of the CMB, located about 1/2" from the P/S connector. This metal post cuts into
the land pattern, grounding 1 or 2 lines.

 A temporary fix while B/4 modifies the standoffs:

 Remove the CMB and put 2 or 3 layers of electric tape on the back of the PCBA,
 between the end (pin 25) of the P/S connector and the letter M on the CMB.     

.               --------                                                        
              M !      ! . . . . . . . . . . . . . . . . . . . . .              
.               !      ! . . . . . . . . . . . . . . . . . . . . . .            
                ! tape ! 25      (P/S connector)                                
.               !------!                                                        

ORIGINATOR: Pat Salcedo

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB028 Pg001

FIB 00029                                                             11/11/87

    *** 3000/4000 self-test fails, LED segment shows blinking '03' ***

SYMPTOM:

 A defective SSN PAL or standard PAL can cause the NVRAM test to
fail..                                                                          

FIX:

 Try a re-seating or replacement of the PAL before replacing the CMB.

ORIGINATOR: Pat Salcedo

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB029 Pg001

FIB 00030                                                             11/16/87

            *** Cautions when changing CMB in BETA 4000 Systems ***

 The Basic Four part number for the CMB in the 4000 system is 903631-002. The
only difference is that the -002 version has level 7.3 MDS PROMs at locations
7H and 9H. If replacement of the CMB in BETA 4000 systems becomes necessary,
you may use the 903631-001 (MM537025), but you must transfer these two PROMs
from the defective CMB to the new one.

                                  *** NOTE ***

          CMB P/N MM535025/903593-001 WILL NOT work in a 4000 system.

ORIGINATOR: H. Mitchell

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB030 Pg001

FIB 00031                                                             11/20/87

      *** Exec won't accept "b4bus" password to install diags on disk ***

SYMPTOM:

 On OS release 7.3C and 7.4A (BETA), when attempting to install the diagnostics
on the hard disk, after the command "service" is entered and the password is 
requested, the system will not accept the "b4bus" password.

FIX:

 The new password is "qwerty"

ORIGINATOR: H. Mitchell

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB031 Pg001

FIB 00032                                                             12/01/87

                       *** Parity Errors During Boot ***

SYMPTOM:
 A problem has been encountered installing 3000 systems with 8-way controllers.
At boot time, parity errors come up right after the proprietory message. A   
maximum of only three parity errors are displayed at this time and all three are
on the same board and port number.

PROBLEM DETERMINATION:
 This problem is due to unterminated cables plugged into that port on the    
quadpus adapter cable.

FIX:
 Unplug that cable from quadpus and label the removed cable as being
unterminated for future use. Once that port has been isolated, rebooting the
system may indicate another unterminated port. Follow the same procedure until
all unterminated cables are found.

   NOTE: 8-ways are addressed 0 to 2

         Ports are numbered 0 to 7

         Example:  "Parity Error Board #1   Port #6"  (Actual location is
                    second 8-way, seventh port)

ORIGINATOR: John Dobson & John Tank

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB032 Pg001

FIB 00033                                                             03/16/90

                  *** UPS warning signal cable information ***

The cable which connects from the SPx CCA to the UPS which is called the
"warning signal cable" is used to notify the CPU that the UPS is supplying
system power.

This cable is shown in the 3000 and 4000 Maintenance manuals, but the part
number shown in these manuals is incorrect.

The correct information on this cable is:

       Cable, UPS Warning Signal - 916076-001 - MM535129

The Uninterruptible Power Source (UPS), warning signal cable (WSC) may have
incorrect wiring.  ECN #12473 contains the correct wiring schematic (see
WPS Bulletin #404).

Having the cable wired wrong did not affect the system, the problem
was that the message never displayed on the terminal.

The WSC gives a visual warning to the user on TERMINAL 0 (console),
and instructs the user to do a proper shutdown.  In order for this to
work, the following should be done:

o  The conf file has to be in verbose.

NOTE:  Only T0 will display the WARNING message.  This will only
       affect Revision A and B of the 916076-001 cable assembly.

DRAWING INFORMATION: See WPS Bulletin #404 for schematic wiring detail.

ORIGINATOR: Harvey Mitchell

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB033 Pg001

FIB 00034                                                             12/29/87

            *** Terminal hang when opening R0 and LP [ WPS 407 ] ***

When RO and LP are opened in this order in a basic program it will cause the
terminal to hang.

The workaround is to reverse the order that the devices are opened.

Examples:

OPEN (1) "RO"       --- will cause a terminal hang
OPEN (2) "LP"

OPEN (2) "LP"       --- will NOT cause a terminal hang
OPEN (1) "RO"

ORIGINATOR: Pamla Thatcher

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB034 Pg001

FIB 00035                                                             12/29/87

       *** Configuring unused ports on the MAI 3000/4000 [ WPS 412 ] ***

When installing a new MAI 3000, we recommend that only those ports which have
devices connected be configured.

Loose Cables connected to configured ports that are not being used, could
possibly cause system performance problems such as system running slow,
excessive parity errors, and terminal hangs.

ORIGINATOR: Carlos Figueroa

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB035 Pg001

FIB 00036                                                             09/26/88

  *** Rear Panel Upgrade Kit for 3000 CCA, improves ESD and serviceability ***

The Rear Panel has been redesigned to enhance ESD immunity and to improve
serviceability. The new style panel is being shipped on new 3000/4000 systems
at this time.

ESD immunity is enhanced by providing better grounding between the controllers
and the CCA frame. This is accomplished by adding a mesh to the rear panel
cover to provide better contact between the I/O connector bracket of the
controllers and the rear panel.

Serviceability is improved by providing better access to the controller stack.
The new Rear Panel has a removable cover over the I/O connectors of the
controller stack.  Removing the cover provides a bigger opening for the I/O
connector brackets facilitating the installation of the controllers on the
stack. This will help to resolve the problem of bending connector pins when
the boards are inserted on the controller stack.

The following kit of parts is available to upgrade early 3000 systems in the
field:

           Rear Panel Upgrade Kit,  MM535047,  P/N 916203-001

This is not a mandatory change. However it is recommended that the kit be
installed on all early systems in order to prevent ESD problems and damage to
the PCBA connectors.

ORIGINATOR: JAVIER VAN OORDT

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB036 Pg001

FIB 00037                                                             02/16/88

         *** New installation procedures for 2000/3000  [ WPS 422 ] ***

 MAI Basic Four is now configuring and formatting all MAI 2000
 systems to the sales order, which is the method by which the MAI 3000
 has always been shipped.  The packaging has been modified to ensure
 that the PCBA's will not come lose during shipment.  This action should
 result in minimizing field failures caused by exposing the PCBA's to
 excessive handling and ESD related damage.                                  

 The following is the recommended procedure for installation of the MAI
 2000/3000 at a customer site:

       o  Unpackage the CCA cabinet from shipping cartons.

       o  Open CCA cabinet and remove the packing material from inside       
          the cabinet.  (Follow instructions inside CCA cabinet)

       o  Make sure that all PCBA's are seated correctly.
          (DO NOT change the switch settings on any of the controllers)

       o  Close CCA cabinet.                                                 

       o  Plug the unit into dedicated line receptacle.

       o  Power-on the system and perform a standard load.

       o  Do an alt.load and run the SIT diagnostics.

       o  Install diagnostics into hard disk.  (Optional)

 If the system does not power up correctly then perform the normal
 troubleshooting procedures.

 Verify that all diagnostics run successfully before you continue with
 your normal installation procedures.

ORIGINATOR: Carlos Fiqueroa

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB037 Pg001

FIB 00038                                                             03/18/88

         *** New firmware CMBs 903631-001 & 903593-001  [ WPS 423 ] ***      

 There is a new firmware available for the 2nd and 3rd artwork CMB on
 the MAI 3000 system.

 903631-001 ---- 3rd Artwork CMB ---- MM537025

 On the 3rd artwork CMB all systems with serial #82600 should be
 reworked at next service call.  Implementation code for ECN #12614 is
 6A.

 When the new firmware is installed on a 3rd artwork CMB, it allows the
 CMB to be used on a MAI 4000 system.  It also improves diagnostic
 capabilities for Depot and Repair Centers.

 903593-001 ---- 2nd Artwork CMB ---- MM535025

 On the 2nd artwork CMB all PCB's with detail 905213-001 should be
 reworked when returned for repairs at the Depot or Repair Centers.
 Implementation code for ECN #12648 is 5.

 The new firmware when installed, improves diagnostic capabilities for
 Depot and Repair Centers.

 Rework Instructions                                                         

 Remove I.C.          Location          Replace I.C.
 -----------          --------          ---------------------                
 165057-017             9 H             165057-021   MM537027
 165057-018             7 H             165057-022   MM537028

 ADDITIONAL PROM INFORMATION:

 Vendor No.     Location        NACS ICN
 ----------     --------        --------                                     
 165057-017     9 H             MM535126
 165057-018     7 H             MM535127
 165057-004     9 H             MM535123
 165057-005     7 H             MM535124

ORIGINATOR: Carlos Fiqueroa

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB038 Pg001

FIB 00039                                                             02/23/88

                      *** Paradyne Modem Configuration ***

Paradyne modems connected to the MAI 2/3000 systems at 7.3 or higher must be 
set up under the" host modem configuration" called out in Hardware Announcement
number 16 section 3.4.1.1.  Failure to do this will result in buffer overruns,
or terminal hangs, or terminal unable to transmit to the cpu.

See FIB #30 under Communications Basic Four.

ORIGINATOR: J WHALEN

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB039 Pg001

FIB 00040                                                             03/07/88

                                *** Error 65 ***

SYMPTOM: System is getting ERR 65. The system is running out of file
         descriptor's.

FIX: Have the software vendor check the vconf file. The fd's, process=, and lu's
need to be increased. The new OS (i.e. 7.3) paramters are more critical and  
the customizing of each system will be different depending on the packages
(i.e. ORIGIN, GRAPH). Follow the chart in the OS release for the formula.    

ORIGINATOR: Bob Berard

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB040 Pg001

FIB 00041                                                             03/18/88

                 *** Diagnostics installation on hard disk. ***

SYMPTOM/TEXT: During diagnostics installation, after several files have been    
copied, the systems asks "Do you want to erase XXXX ?".K

FIX: The new Diagnostic Tape works on 2000, 3000 and 4000, so it has two        
versions of some diagnostics in it.                                             

The first version is for 3/4000, the second version is for 2000.                
So, for installation on a 3000 you should answer 'n', on a 2000 answer 'y'.     
ORIGINATOR: Pat Salcedo

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB041 Pg001

FIB 00042                                                             03/18/88

            *** Replacing 3rd artwork CMB with a 2nd artwork CMB ***

SYMPTOM: We had a 3000 with a 3rd artwork CMB (903631-001) which had low
REV PROMS. We received a 2nd artwork CMB (903593-001) with the correct level
PROMS (165057-021 & -022) but could not install it because the cable (916025-002
 MM535051 cntrl panel-to-CMB) in the system was too short. It plugs into a
different location. On the 3rd artwork CMB it plugs into J4 at  location R-1 at
the top near the battery. On the 2nd artwork CMB it plugs into J4 at location
E-1 behind the memory  PCBAs.

FIX: The cable, cntrl panel-to-CMB must be replaced if you replace a 3rd artwork
     CMB with a 2nd artwork cmb.

ORIGINATOR: Bob Berard

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB042 Pg001

FIB 00043                                                             03/23/88

                       *** Replacable battery on CMB ***

SYMPTOM: Low battery error message.

FIX:.Repace Lithium battery on CMB 903631 with YY019263 (183007-001).           

ORIGINATOR: John Tank

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB043 Pg001

FIB 00044                                                             03/23/88

                       *** Disk drive cable problems ***

SYMPTOM: The following symptoms may occur after working inside system:

             1. Cannot boot from disk drive.

             2. When system is in self test, it displays error "5A" when     
                testing wdc PCBA.

             3. DUTIL under 7.3 Diagnostics cannot read superblock and reports  
                drives as "unknow".                                             

FIX: Check cabling to drive. Due to the sharp bends in the ribbon cables from
     the controllers to the drives it is very possible that a break may occur
     or a connector has not been replaced properly.

ORIGINATOR: John Tank

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB044 Pg001

FIB 00045                                                             10/17/88

              *** MAI 4000 Hardware Announcement [ WPSH 18A ] ***

 MAI Basic Four is pleased to announce the addition of a new system to
 the BOSS/IX~ family, the MAI 4000~.  The MAI 4000 is idealy suited for
 new customers with initial requirements of 15 to 30 users.  An upgrade
 kit is also available for the users who have outgrown their MAI 3000~
 system and desire to add more memory, disk and/or serial ports.

 The MAI 4000 system highlights include:

 o  Up to 16MB RAM and 1,120MB of formatted disk capacity

 o  Support of 74 serial devices and 3 parallel ports

 o  4MB memory boards

 o  All the peripherals and controllers (3rd ART WORK CMB ONLY) used on
    the MAI 3000 can be used on the MAI 4000

 o  Improved O/S performance                                                 

                   **************************************                    
                   *                                    *                    
                   * NOTE: Not all of these capacities  *
                   *       can be configured on a       *
                   *       single system at the same    *
                   *       time.  They represent        *
                   *       maximum capacities for each  *
                   *       resource                     *
                   *                                    *                    
                   **************************************                    

        Copyright 1988 MAI Basic Four, Inc.  All rights reserved

                             TABLE OF CONTENTS

                 1.0  INTRODUCTION

                 2.0  NEW HARDWARE

                 3.0  EXPANSION SUBSYSTEM

                 4.0  4MB MEMORY CARD

                 5.0  PARALLEL PRINTER CONTROLLER

                 6.0  RESTRICTIONS

                      6.1  EXPANSION UNIT
                      6.2  CMB
                      6.3  WDC CONTROLLER
                      6.4  LAN, MTS, MTC, AND 4-WAYS                         

                 7.0  POWER ISSUES

                      7.1  POWER LOSS
                      7.2  POWER ON/STARTUP

                 8.0  SERIAL PORT ADDRESSING

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB045 Pg001

                 9.0  PARALLEL PRINTER/CMB ADDRESSING

                10.0  MEMORY ADDRESS

                      10.1  4MB VERSION
                      10.2  1MB VERSION

                11.0  EXPANSION INTERFACE A (EIA)

                      11.1  JUMPER SETTING
                      11.2  SWITCH SETTINGS

                12.0  EXPANSION INTERFACE B (EIB)

                      12.1  JUMPER SETTING
                      12.2  SWITCH SETTINGS

                13.0  DISK PARTITIONS

                14.0  UNINTERRUPTABLE POWER SUPPLY (UPS)

                15.0  RECOMMENDED DISK CONFIGURATION

                16.0  RELATED DOCUMENTATION 

  1.0  INTRODUCTION

       The MAI 4000 system is a multi-user, multi-tasking microcomputer
       system whose operating system, BOSS/IX, combines the features of
       MAI Basic Four Business BASIC and the UNOS operating system,          
       which is similar to the industry standard UNIX operating system.
       The O/S is functionally compatible with BOSS/IX used on the MAI
       2000/3000 systems.

  2.0  NEW HARDWARE

       The MAI 4000 contains the following new hardware:

            1.  Expansion Unit (EU) cabinet

            2.  Expansion Interface A (EIA)

                o  Includes two additional parallel printer ports

            3.  Expansion Interface B (EIB)

                o  Includes six additional peripheral controller slots

            4.  4MB Memory Board

  3.0  EXPANSION SUBSYSTEM

       The Expansion Subsystem consists of an Expansion Unit (EU)
       cabinet, two bus extender cards (EIA and EIB) one in the Base
       Unit and one in the Expansion Unit, and a set of cables to
       interconnect the two.  The mechanical outline for the Expansion
       Unit is the same as the Base Unit cabinet (i.e., MAI 3000
       cabinet).

       The EIA resides in the Base Unit on top of the I/O controller
       stack and logically buffers the EBUS signals prior to extending

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB045 Pg002

       them to the EIB in the Expansion Unit.

  4.0  4MB MEMORY CARD

       The functionalities offered by the 4MB memory card are similar
       to those of the 1MB memory card.  Up to six 1MB and 4MB memory        
       cards can be intermixed, provided that the memory capacity does
       not exceed the maxiumum of 16MB.  The 4MB uses the same address
       as the 1MB, the only difference being that the 4MB has to be
       addressed before the 1MB cards.

  5.0  PARALLEL PRINTER CONTROLLER

       The parallel printer controller is located on the EIA controller.
       It allows the attachment of two more parallel printers (in
       addition to the parallel port on the CMB) for a total of three
       parallel printers. 

  6.0  RESTRICTIONS

       6.1  EXPANSION UNIT

            The Expansion Unit will support a maximum of six additional      
            controllers with the following limits:

            1.  8-Ways --------------- (Up to 6 Controllers Max.)

            2.  WDC Controller ------- (Up to 2 Controllers Max.)

       6.2  CMB

            Requires a 3rd Art-Work CMB with Rev. level N or higher, to
            access more than 8MB of memory and support the Expansion Unit.

       6.3  WDC Controller

            Drive 0 or WDC 0 has to be in the Base Unit.  If installed
            in the Expansion Unit the system will not load.

       6.4  LAN, MTS, MCS, AND 4-WAYS                                        

            Supported in the Base Unit only.

  7.0  POWER ISSUES

       7.1  POWER LOSS

            The MAI 4000 system with both a Base and Expansion Unit are      
            to be treated as a single unit, with respect to power loss.
            In other words, if power to either unit is lost, the system
            will cycle down.

       7.2  POWER ON/STARTUP

            If the Base Unit is powered on and the Expansion Unit is not
            correctly cabled or does not have power, the Base Unit can
            operate as a single box.  If power is restored to the
            Expansion Unit subsequent to system startup, the Expansion
            Unit and all its component will be ignored.  The system will
            have to be shutdown and re-booted to enable recognition of the
            powered on Expansion Unit.

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB045 Pg003

  8.0  SERIAL PORT ADDRESSING

                                 NOTE: 0 = ON        N/A = NOT AVAILABLE
                                       1 = OFF       N/S = NOT SUPPORTED

                      4-Way                8-Way            Minor #s

  BOARD  LOC.  1 2 3 4 5 6 7 8 9 10  1 2 3 4 5 6 7 8 9 10  4-Way   8-Way     

    0    BU    0 1 1 1 1 1 1 0 1 0   0 1 0 1 1 1 1 0 0 0    0-3     0-7
    1    BU    0 1 1 0 1 1 1 0 1 1   1 1 0 1 1 1 0 0 0 0    8-11    8-15
    2    BU    0 1 1 0 0 1 1 1 0 0   0 0 1 1 1 0 1 0 0 0   16-19   16-23
    3    BU    0 1 1 0 0 0 1 1 0 1   1 0 1 1 1 0 0 0 0 0   24-27   24-31
    4    BU           N/A            0 1 1 1 0 1 1 0 0 0    N/A    32-39
    5    BU           N/A            1 0 0 1 0 1 0 0 0 0    N/A    40-47

    6    EU           N/S            0 1 0 1 1 1 1 0 0 0    N/S    48-55
    7    EU           N/S            1 1 0 1 1 1 0 0 0 0    N/S    56-63
    8    EU           N/S            0 0 1 1 1 0 1 0 0 0    N/S    64-71
    9    EU           N/S            1 0 1 1 1 0 0 0 0 0    N/S    72-79
    10   EU           N/S            0 1 1 1 0 1 1 0 0 0    N/S    80-87     
    11   EU           N/S            1 0 0 1 0 1 0 0 0 0    N/S    88-95

  9.0  PARALLEL PRINTER/CMB ADDRESSING

                                            Major        Minor               

       CMB Parallel port 1                    8             0
       EIA Parallel port 1                    8           100
       EIA Parallel port 2                    8           101
       CMB Port A                             9             0                
       CMB Port B                             9             1

       NOTE:  The RAW parallel printer major, minor numbers are:

                CMB:   5, 0
              EIA 1:   5, 1
              EIA 2:   5, 2

 10.0  MEMORY ADDRESS

      10.1   4MB VERSION

             Address Range              S6  S5  S4  S3  S2  S1

             0MB  -  4MB                ON  ON  ON  ON  ON  ON
             4MB  -  8MB                ON  ON  ON  ON  ON  OFF
             8MB  - 12MB                ON  ON  ON  ON  OFF ON
            12MB  - 16MB                ON  ON  ON  ON  OFF OFF

      o  NOTE:  Address 4MB boards before addressing the 1MB. 

       10.2  1MB VERSION

             Address Range          S8  S7  S6  S5  S4  S3  S2  S1

             0MB  -  1MB            ON  ON  ON  ON  ON  ON  ON  ON           
             1MB  -  2MB            ON  ON  ON  ON  ON  ON  ON  OFF
             2MB  -  3MB            ON  ON  ON  ON  ON  ON  OFF ON
             3MB  -  4MB            ON  ON  ON  ON  ON  ON  OFF OFF
             4MB  -  5MB            ON  ON  ON  ON  ON  OFF ON  ON
             5MB  -  6MB            ON  ON  ON  ON  ON  OFF ON  OFF

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB045 Pg004

             6MB  -  7MB            ON  ON  ON  ON  ON  OFF OFF ON           
             7MB  -  8MB            ON  ON  ON  ON  ON  OFF OFF OFF
             8MB  -  9MB            ON  ON  ON  ON  OFF ON  ON  ON
             9MB  - 10MB            ON  ON  ON  ON  OFF ON  ON  OFF
            10MB  - 11MB            ON  ON  ON  ON  OFF ON  OFF ON           
            11MB  - 12MB            ON  ON  ON  ON  OFF ON  OFF OFF
            12MB  - 13MB            ON  ON  ON  ON  OFF OFF ON  ON           
            13MB  - 14MB            ON  ON  ON  ON  OFF OFF ON  OFF
            14MB  - 15MB            ON  ON  ON  ON  OFF OFF OFF ON
            15MB  - 16MB            ON  ON  ON  ON  OFF OFF OFF OFF

 11.0  EXPANSION INTERFACE A  (EIA)

       11.1  JUMPER SETTING

             The jumper JMP1 detrmines the Base Address of the EIA
             board.

             JMP1             From - To           Base Address

                         *       1 - 2              4C00XXX
                                 2 - 3              4C01XXX

                         * = Default setting
                         X = Don't care

       11.2  SWITCH SETTINGS

             Switch SW1 determines the Bus Arbitration level of the
             EIA and the Interrupt Acknowledge Arbitration Sub-Level.        

             SW1  (4 position)       1       2       3       4               
                                     OFF     ON      ON      ON

 12.0  EXPANSION INTERFACE B  (EIB)

       12.1  JUMPER SETTING

             The jumper JMP1 determines whether the Base Unit is
             reset when the Expansion Unit is powered on.

             JMP1             From - To           Reset Base Unit            

                         *      NONE                  NO
                                1 - 2                 YES

                         * = Default setting 

       12.1  (Cont.)

             The jumper JMP2 determines whether the Host CPU is
             interrupted when the Expansion Unit is powered on.

             JMP2             From - To           Interrupt Host CPU

                         *      1 - 2                 YES
                                2 - 3                 NO

                         * = Default setting

       12.2  SWITCH SETTINGS

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB045 Pg005

             The Expansion Interface B (EIB) Power On Interrupt is
             at level 6 and Sub-level determined by the switch SW1.

             SW1  (4 position)       1       2       3       4               
                                     OFF     ON      OFF     ON              

 13.0  DISK PARTITIONS                                                       
       Each BOSS/IX disk supports up to 32 partitions.  Partitions are
       as follows:

                DRIVE                 PARTITIONS

                  0                      0-31
                  1                     32-63
                  2                     64-95
                  4                    128-159
                  5                    160-191
                  6                    192-223

  14.0  UNINTERRUPTABLE POWER SUPPLY

        A large MAI 4000 configuration will require a second (1,000
        watts) UPS.  An example of the configurations which require the
        second UPS are described in the following table.

           Total No. of
         Internal Drives                Total No. Of Controllers
         _(Disk & Tape)_                _ Including EIA Board  _

               4                             10 or more
               5                              7 or more
               6 or more                      5 or more

        If an MAI 4000 system contains the same number or more of drives
        and controllers as indicated in the table, then a second UPS is
        required. 

  15.0  RECOMMENDED DISK CONFIGURATION

        -----------    -----------                                           
        \ Frt Pnl \    \         \
        \      2  \    \  7   6  \
        \         \    \         \                                           
        \         \    \         \                                           
        \  1   0  \    \  5   4  \                                           
        \         \    \         \                                           
        -----------    -----------                                           
        BASE UNIT      EXPANSION UNIT

        There is no Drive 3 as the tape drive goes in that position. To find
        the Minor number for the drives use the formula:

          DRIVE # * 32 = DRIVE MINOR NUMBER

          For example Drive 6 would have minor 192; 6*32=192

  14.0  RELATED DOCUMENTATION

        o  MAI 4000 Service Manual #M8205A P/N 008205-001

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB045 Pg006

ORIGINATOR: Carlos Figueroa/Harvey Mitchell

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB045 Pg007

FIB 00046                                                             06/01/88

          *** CMB shorting out on chassis standoffs [ WPSF 429A ] ***

 There is a problem reported with the 3rd artwork CMB shorting out
 at the chassis stand-offs.  This problem is only seen at installation
 time.

 All rework for ECN 12613 (implementation code 5) should be done at
 DEPOT and REPAIR CENTERS when returned for repairs.

 Rework all CMB's with PCB detail 905296-001 as follows:

 Apply adhesive backed insulating labels to the solderside of PCBA
 approximately where the attached drawing shows.  These insulators
 cover the top of the chassis stand-offs which may possibly short PCB
 etch.

 The MBF part number for the insulator label is 762617-001, MM002409.

 NOTE:  Advance revision level to M.

_____________________________________________________________________<--
|                                                                   |  |
| ::                                                                |  |
| ::                                                                |  |
| ::                                                     :::::::    | 5.7"
| ::                                                     ::   ::    |  |
|                                                        :::::::*** |  |
|                                                               *** |<--
| ::                                                     :::::::*** |
| ::                                                     ::   ::    |        
| ::                                                     :::::::    |        
| ::                     ***                  ***                   |        
| ::                     ***::::::::::::::::::***                   |        
|                        ***                  ***                   |        
| ::                      ..                                        |        
| ::                      ..                                        |        
| ::                      ..                                        |        
| ::                      ..                                        |        
| ::                                                                |        
|___________________________________________________________________|

 NOTE: *** = location to apply adhesive insulating labels on solder side of PCB.

ORIGINATOR: Carlos Figueroa

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB046 Pg001

FIB 00047                                                             03/28/88

         *** Terminal/System Hang on Release 7.2 O.S. [ WPSF 435 ] ***

 Problem:

    A terminal(s) appears to be hung or if no other terminals are logged on,
    the system appears to be hung.

    You will most likely find this problem when you log off then cannot log  
    back on again.  The terminals which are active will continue working
    until a logoff takes place at which point the terminal will 'hang'.

 Cause:

    The process id 1 is suspended on a 3000 or missing on a 2000.

    There is a small 'window' in the process handling in which this          
    process suspends.  Usually, the suspend is a result of a port that is    
    logged-off flooding the system with escapes.

    To verify:  On an active terminal, do a 'ps -a'.
                Look for PID 1.
                On a 2000, it will not exist.
                On a 3000, the status will be SSPD.

 Workaround:

    Upgrade to 7.3 or 7.4.

ORIGINATOR: Pamala Thatcher

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB047 Pg001

FIB 00048                                                             03/28/88

               *** Crash Code 21 on Release 7.3 [ WPSF 436 ] ***

 Problem:

    The system crashes with a crash code 21 or bus error.  The first
    entry in the dump error log is a 0:16 or a 0:0 which can be found
    using the dmplog command.

    Usually this will occur just after a print job has finished printing
    and, to date, on systems that (1) have a maximum configuration with
    more than one printer or (2) are over configured with one printer for
    the amount of memory in the system.

    Here are some examples of configurations on systems that have reported
    this problem:

    3000 -- 2MB Memory, 9 users/terminals, 2 printers
    2000 -- 1MB Memory, 7 users/terminals, 1 printer

 Cause:

    The memory is corrupted. The system goes to 'free memory' which has
    already been accidentally freed.  Also during memory compaction the
    system detects 2 adjacent free sections because one of the free
    sections had already been freed.

    The bus error is caused by 2 processes accidentally sharing the
    same memory.

 Workaround:

    Upgrade to 7.4

    Do NOT configure more user/terminals than the system has the memory
    to support.  (This might only cut down the chances of the crash,
    but the crash could still occur.)

ORIGINATOR: Pamla Thatcher

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB048 Pg001

FIB 00049                                                             04/18/88

       *** Slow running due to incorrect PMMU jumpering  [ WPSF 442 ] ***    

 PROBLEM:

 Some CMB boards with PMMU processors have gone out to the field from
 Manufacturing, Depots and Repair Centers missing jumpers 16 to 17, and
 18 to 19.

 SOLUTION:

 Jumpers 16 to 17 and 18 to 19 must be installed if the PMMU is
 present.

 REASON:

 Jumper 16 to 17 establishes the state of a Fast Table Search in the
 PMMU.  If this jumper is not installed, one additional clock cycle
 might be introduced to the total time during a Table Search.

 Jumper 18 to 19 controls the Early Processing Startup for exception
 processing in the PMMU.  If this jumper is not installed, all PMMU
 initiated operations are extended by 6 clock cycles.  Since the PMMU
 does not arbitrate for the logical bus in the CMB design, the jumper
 must be installed to prevent the additional delay in all PMMU access
 and improve performance.

ORIGINATOR: Carlos Fiqueroa

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB049 Pg001

FIB 00050                                                             11/02/88

   *** 4000 System Hangs with >12 Meg - EIA change/SW Change  [ WPS 461 ] ***

    PROBLEM:

    A problem has been found with 'SYSTEM HANGS' when more than 12MB of
    memory is configured and an attempt is made to access any controller or
    'cache parity' errors on the Expansion Unit of the MAI 4000 system.

    SOLUTION:

    ECN #12922 contains the rework instructions for the Expansion
    Interface A (EIA) board P/N 903645-001. This ECN has an implementation
    code of 6A.  All systems must be reworked on the next service call or
    replace the EIA PCB with one at REV B or higher.

NOTE: The switch settings for SW1 are also changed with this REV level.

      SW1   -4   -3   -2   -1

             C    C    C    O  - correct setting for PCBAs at or above REV B

                          C = Closed/On   O = Open/Off

                              REWORK INSTRUCTIONS

Rework all assemblies built on detail 905320-001

1)    Pad isolation table

     cut #    From     To     Remarks                                        
    -----------------------------------------
      1      RP4-5    RP1-5   COMPONENT SIDE
      2      RP1-5    6G-15   COMPONENT SIDE
      3      RP4-5    J3-7    SOLDER SIDE

2)   Jumper wire table

      JMP#   From      To     Remarks
    --------------------------------------                                   
       1     6G-15    RP4-5   SOLDER SIDE

3)   Reset DIP Switch SW! as follows:

     SW1-1 = off
     SW1-2 = on
     SW1-3 = on
     SW1-4 = on

4)   Remove IC at location 4L, replace with MBF P/N 911037-003

5)   Remove IC at .ocation 3F, replace with MBF P/N 911034-013

6)   Update REV to B

ORIGINATOR: C. Figueroa
            N. Jones                                                         

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB050 Pg001

FIB 00051                                                             06/23/88

                  *** 3000 System won't Run BASIC Programs ***

SYMPTOM/TEXT: After replacing the CMB PCBA with new style CMB (PMMU), the system
              would not run basic programs, tried replacing disk as suggested in
              FIB #19, did not correct the problem. System worked fine when
              original CMB was reinstalled.

FIX: Upgraded system to level 7.4 operating system.

ORIGINATOR: B. Matthews/Ken Conners

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB051 Pg001

FIB 00052                                                             01/25/95

                      *** MAI 2500 General Information ***

The MAI 2500 is a replacement for the MAI 2000 based on the MAI 3000 hardware.
It uses the same cabinet as the MAI 3000 but with a different control panel.

The MAI 2500 utilizes all MAI 3000 hardware except:

  o  2000 Power supply modified with ECN # 12939 (sheet metal cut-out to allow .
     correct insertion to CMB)
  o  3000 CMB board modified with ECN # 13031 (New Proms and power supply
     connector spacer)
  o  3000 Card Cage modified to limit the maximum number of boards to 4.
  o  New Control Panel

            *****  NACS  MACHINE TYPES AND FEATURE NUMBERS *****

NACS     MBF     DESCRIPTION
----     ----    -------------------
4125     4125    MAI 2500 System CCA

                  ***** SOFTWARE INFORMATION *****

BOSS/IX 7.4B is the required Operating System. Level 7.4B supports the limited
configuration of the MAI 2500.

A new 2000/2500/3000/4000 SSN tape will be released to support the MAI 2500 .
Previous SSN tapes will not work.

A new diagnostics tape will be released with 7.4B Operating System.

                ***** AVAILABLE DOCUMENTATION *****

MAI 2500/3000 Service Manual, M8108B

                 ***** AVAILABLE TRAINING *****

SPx training classes have been expanded to cover the MAI 2500.

                  ***** SPECIAL TOOLS *****

2000/2500/3000/4000 SSN Tape cartridge 1/4"....................Special Request
2000/2500/3000/4000 SSN Tape reel 1/2".........................Special Request

To obtain a copy of the SSN tape contact Software Distribution.

           ***** SPECIAL ADMINISTRATIVE PROCEDURES *****

Same as for the MAI 3000/4000

              ***** SPARE PARTS INFORMATION *****

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB052 Pg001

                     NACS  TYPE 4125, MBF 2500 SYSTEM

                                                              WHERE USED
                                                         ---------------------
MBF NO.        ICN NO.      DESCRIPTION                  2000  3000  4000 2500

916275-001     MM532500     CABLE ADAPTER, DC POWER        0    0     0    1
907612-002     MM532510     CABLE, "Y" DC POWER TO HD      0    0     0    1
916112-002     MM537080     CABLE, 100 COND 24"            0    0     1    0
907968-001     MM535061     CABLE, 8-WAY ADAPTER           0    1     1    1
916021-001     MM535054     CABLE, BUS, DR. 0 & 1          0    1     1    1 
916021-002     MM535058     CABLE, BUS, DR. 2 & 3          0    1     1    0
916001-002     MM535056     CABLE, DR.-POWER SUPP.         0    1     1    0
916024-001     MM535052     CABLE, MCS TO CONTLR           0    1     1    1 
916022-001     MM535055     CABLE, RADIAL, DR. 0           0    1     1    1
916023-001     MM535057     CABLE, RADIAL, DR. 1           0    1     1    1
916022-002     MM535059     CABLE, RADIAL, DR. 2           0    1     1    0
916023-002     MM535060     CABLE, RADIAL, DR. 3           0    1     1    0
907756-001     MM532090     CBL ADAPTER, 4WAY CBL-CMB      1    1     1    1
907755-001     MM535062     CBL ADAPTER, CMB CBL-4WAY      1    1     1    1
916025-002     MM535053     CBL, CTRL PNL-CMB, 18"         0    1     1    0
916025-001     MM535051     CBL, CTRL PNL-CMB, 29"         0    1     1    0
344016-004     MM877120     CORD, AC POWER, 115V U.S.      1    1     1    1
344026-001     MM532515     CORD, AC POWER, INTL           1    1     1    1
400575-003     MM534030     DISK DR,5.25 105MB-MAX         1    1     0    0
400549-001     MM534020     DISK DR,5.25 43MB-MICR         1    1     0    0
400413-004     MM534060     DISK DR,5.25 53MB-RODI         1    1     0    1
400575-007     MM534070     DISK, MAXTOR XT1085            1    1     0    0 
400575-005     MM534040     DISK, MAXTOR XT1140            1    1     0    0
400575-009     MM503040     DISK,MAXT XT1085 <70 DEF       1    1     1    1
400575-010     MM503050     DISK,MAXT XT1140 <70 DEF       1    1     1    1
400575-008     MM534080     DISK,MAXT XT2190 <120 DEF      0    1     1    1
916123-001     MM537040     FAN & CABLE ASM, CABINET       0    1     1    1
907935-001     MM535045     FAN, POWER SUPPLY 3000         0    1     1    0
911017-001     MM535065     IC PAL, 1ST DISK CNTRL         1    1     1    1 
911017-007     MM535070     IC PAL, 2ND DISK CNTRL         0    1     1    0 
911005-082     MM538181     IC PAL, SSN, 3000 CMB          0    1     1    1
911005-083     MM538191     IC PAL,STANDRD 3000CMB         0    1     1    1
165057-029     MM532521  (1)IC PROM, 2500 CMB 9H           0    1     1    1
165057-030     MM532522  (1)IC PROM, 2500 CMB 7H           0    1     1    1
165057-014     REF.ONLY     IC PROM, 3000 CMB 7H           0    1     1    0
165057-013     REF.ONLY     IC PROM, 3000 CMB 9H           0    1     1    0
903639-001     MM535063     PCBA, 1/2 TAPE CONTROLLER      1    1     1    1
903528-001     MM532010     PCBA, 1/2" MTS BUS ADAPTER     1    1     1    0
400591-001     MM532020     PCBA, 1/2" MTS FORMATTER       1    1     1    0
903406-002     MM531070     PCBA, 1/4" MCS CNTRLR          1    1     1    1
903533-001     MM535030     PCBA, 1MB MEMORY               0    1     1    1
903390-001     MM531040     PCBA, 4-WAY CONTROLLER         1    1     1    1
903575-001     MM537030     PCBA, 4MB MEMORY 4000          0    1     1    0
903577-001     MM535040     PCBA, 8-WAY CONTROLLER         0    1     1    1
903631-003     MM532520     PCBA, CMB 2500                 0    1     1    1
903593-001     MM535025     PCBA, CMB 3000, A/W 2          0    1     0    0
903631-001     MM537025     PCBA, CMB 4000, A/W 3          0    0     1    0
903631-003     MM532520     PCBA, CMB 2500/3000/4000       0    1     1    1
903631-004     MM532550     PCBA, CMB 2500/3000/4000       0    1     1    1
903667-001     MM535080     PCBA, DUAL SCSI DISK CONTR     0    1     1    0
903645-001     MM537055     PCBA, EXPANSION INT A          0    0     1    0
903643-001     MM537050     PCBA, EXPANSION INT B          0    0     1    0
903405-001     MM531060     PCBA, LAN CONTROLLER           1    1     1    1
903496-001     MM531150     PCBA, WD CONTRL,SNGL BD        1    1     1    1
907529-001     MM538040     PLUG, LOOPBACK, 1 PORT         1    1     0    1
907530-001     MM538050     PLUG, LOOPBACK,2 PORTS         1    1     0    1

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB052 Pg002

907472-003     MM532525     POWER SUP.ASM, 115V, 2500      1    0     0    1
907472-004     MM532530     POWER SUP.ASM, 240V, 2500      1    0     0    1
907897-001     MM535010     POWER SUPPLY ASM, 3000         0    1     1    0
916286-001     REF.ONLY     SPACER, CMB PWR SUP CONN       0    0     0    1
916276-001     MM532535     SWITCH & HARNESS ASM, NMI      0    0     0    1
916027-001     MM535050     SWITCH ASM, LOCK               0    1     1    0
916026-001     MM535000     SWITCH,MEMBRANE CTRL P         0    1     1    0
400412-001     MM540010     TAPE DR, 1/4" CIPHER 43MB      1    1     0    1
400683-001     MM650001     TAPE DR, 1/4" TANDB 120MB      1    1     1    1
400683-002     MM650002     TAPE DR, 1/4" TANDB 60MB       1    1     1    1

(1) These proms are required for 2500 systems, but they are also designed for
    3000/4000 systems.

ORIGINATOR: JAVIER VAN OORDT

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB052 Pg003

FIB 00053                                                             08/06/88

     *** System Hangs during Boot/Port Hangs due to Modem Configuration ***

SYMPTOM/TEXT: System hangs on boot. Can't get back into system after hang
              up of remote terminal.

FIX: Make sure CMD. char echo is off, if Paradyne modem, SW 2-4 (if other type
     check book with modem) on the modem at the C.P.U. Also make sure that
     ARQ-PARADYNE SW 3 - 2 & 3 are off, unless both modems are the same.

ORIGINATOR: Pete Dobrow

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB053 Pg001

FIB 00054                                                             11/22/89

               *** 2000/3000/4000 LARL History [ WPSF 475R2 ] ***

 The following controllers should be checked for the LARL (Lowest Acceptable
 Revision Level).  A brief comment on the ECN history is also included to avoid
 unnecessary board replacement.

 NOTE: The revisions that are skipped means that there were no
       functionality changes, only cosmetic and documentation
       changes.

                             (*) = LARL
                            (**) = ECN Implementation Code 6A

 Controller        Part #          Rev.            Comment
 ------------      ------          --------------  --------------------------

 WDC               903496           Y    10/10/88  Improve ESD immunity
                                    R ** 2/19/86   Multiple Errors,
                                                   Incorrect Power-
                                                   Up Sequence               
                                    P              >8MB addressing
                                                   range.
                                    N              Firmware change-
                                                   Data corruption
                                                   fix, Drive unit
                                                   fix.
 .............................................................................
 CMB 2nd Artwork   903593           Y    10/18/88  Improve ESD immunity
                                    V    01/18/88  EPROM Diagnostic update
                                    U ** 10/5/87   New MDS Firmware
                                                   Bug fix, Sys.
                                                   hang at BOOT
                                                   when MODEM/MUX
                                                   attached to 8-Way
                                                   port 0.
                                    T              MDS Firmware
                                                   Change.
                                    N              Timing problem
                                                   causing system
                                                   to fail MEM Test
                                                   at boot.
 .............................................................................
 CMB 3rd Artwork   903631          AE   6/12/89    Parts changed because
                                                   of possible cache
                                                   parity errors.  Note:
 SCSI disk drives require a                        Update firmware to add
      903631-004 on the 3/4000 and                 SCSI to 2500.
      903631-005 on the 2500.                      (903631-005)
                                   AB * 5/17/89    Add SCSI firmware for     
                                                   7.5B.   (903631-004)
                                   AA   2/7/89     Change PAL firmware to
                                                   support 7.5B func.
                                                   Remove 32 IC sockets
                                                   from PCBA.
                                   W    1/31/89    Remove resistor at R46.

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB054 Pg001

 Controller        Part #          Rev.            Comment
 ------------      ------          --------------  --------------------------
 CMB 3rd Artwork   90363           V    8/14/88    Use common CPU and        
 (continued)                                       Boot PROM for 2500/
                                                   and 3000/4000.
                                   U    8/24/88    Eliminate occasional
                                                   ERROR message "BAD
                                                   INTERRUPT THROUGH
                                                   VECTOR XX" one IC
                                                   vendor change.
                                   T    8/18/88    LED component change.
                                   S    7/27/88    Improve ESD Immunity.
                                   R    5/19/88    Release Boot PROM for
                                                   the 2500.
                                   L *             New MDS Firmware to
                                                   support the MAI 4000
                                                   system.
                                   K ** 10/05/87   MDS Firmware change-      
                                                   Bug Fix, Sys.hang at
                                                   BOOT when MODEM/MUX
                                                   attached to 8-way
                                                   port 0.
                                   H               MDS Firmware change-
                                                   Bug fixes.
 .............................................................................
 8-Way             903577          L  * 3/28/89    Component reliability
                                                   improvement.
                                   K    9/14/88    Remove sockets.
                                   J    8/18/88    LED component change.
                                   H    7/27/88    Improve ESD immunity.
                                   G    6/6/88     Added new firmware for
                                                   7.4E.
                                   F ** 8/10/87    Update Firmware &
                                                   Hardware for Bug fix
                                                   & avoid bad character
                                                   output to printer.
                                   C               SCC Timing problem.
 .............................................................................
 4-Way             903390          Y    10/10/88   Improve ESD immunity
                                   W ** 8/17/87    Firmware change;
                                                   Bypass SCC loopback
                                                   selftest.
                                   P               Firmware change;
                                                   Required for 7.1A.
 .............................................................................
 MCS              903406-001       AE   10/10/88   Improve ESD immunity
                                   AD   03/14/88   Timing change
                                   Y *             Data miscompare fix.
                                   T               Pal & Firmware
                                                   change to correct
                                                   timing problem.
 .............................................................................
 MCS              903406-002       AB *            Firmware change to
                                                   work with 60/120MB
                                                   streamer tape drive.
 .............................................................................
 1 MB Memory       903533          D ** 8/3/87     Leads short on
                                                   control panel
                                                   connection pins.
 .............................................................................

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB054 Pg002

 Controller        Part #          Rev.            Comment
 ------------      ------          --------------  --------------------------
 4 MB Memory       903575          D ** 8/3/87     Leads short on
                                                   control panel
                                                   connection pins.
                                   B               Connect missing
                                                   ground.
 .............................................................................
 LAN               903405          M    10/10/88   Improve ESD immunity
                                   D ** 08/13/84   Add terminator with       
                                                   switch.
                                   C               DMA timing/disable
 .............................................................................
 1/2" Tape Ctlr.   903639          F *  2/7/89     Firmware update to
                                                   support STC CD05.
                                   E    10/24/88   Update firmware to
                                                   support GCR.
                                   C    5/17/88    Improve System ESD
                                                   immunity.                 
                                   A    2/5/88     Product release.
 .............................................................................
 MTS               903528          A *             Production release
 .............................................................................
 128/256K Memory   903368          H    6/26/87    PCB Catch.
                                   G    7/24/86    Improve release on PCBA
                                                   Latch/Ejector catch.
                                   F    5/10/84    New artwork 905060.
                                   A    12/13/83   Production Release.
 .............................................................................
 WDC Adapter Board 903439          B *             Change spacers
 .............................................................................
 Adaptec Board     907649          E *             Firmware change-Data
                                                   corruption fix.
                                   D               Substitute Rev.A
                                                   Adaptec firmware.
 .............................................................................
 CMB  16 BIT       903441-001      AU *            Boot Proms Rev.B3.1
 .............................................................................
 CMB  16 BIT       903441-002      BE *            1/2" Streamer tape
                                                   boot
 .............................................................................
 EIA               903645          E *  8/18/88    LED component change.
                                   C    4/5/88     System hangs if more
                                                   than 12MB memory and
                                                   external control
                                                   config.
                                   A    9/14/87    Product release.
 .............................................................................
 EIB               903643          C *  8/18/88    LED component change.
                                   A    9/14/87    Product release.
 .............................................................................
 Dual SCSI Ctlr    903667          E *   3/9/89    Product release.

DRAWING INFORMATION: See WPS Field Bulletin 475 Revision 2 for a complete ECN
                     history. This FIB is an extraction of important ECNs.

ORIGINATOR: Dan Arteritano/Norm Jones

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB054 Pg003

FIB 00055                                                             08/30/88

       *** Ports Lost when Removing 8/4 Ways and Rebooting the System ***

SYMPTOM/TEXT: When an 8/way is removed from the system and the system is
              rebooted, those ports will be lost to the system. The terminal
              configuration menu shows these ports blank. This occured on a 4000
              system with 7.4A O.S.

FIX: Reenter the configuration parameter's for the ports (in single user mode).
     Save the new configuration and reboot the system.

ORIGINATOR: Bob Berard

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB055 Pg001

FIB 00056                                                             08/30/88

        *** EIA Transmission Parity Errs During Boot - 4000 at 7.4A ***

SYMPTOM: Crash code 0 - EIA Transmission Parity errors may occur during the boot
         of 4000 systems at level 7.4A due to a timing problem with 8-ways in
         the expansion chassis using level 7.4A.

PROBLEM DETERMINATION: The problem may show up as either solid or intermittant
                       and may be affected by board placement, number of 8-ways
                       in the expansion chassis, etc.

FIX: Upgrade to level 7.4B

ORIGINATOR: Carlos Figueroa
            N. Jones                                                         

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB056 Pg001

FIB 00057                                                             11/21/88

                           *** Phantom ERROR 3's ***

SYMPTOM: Customer reports ERROR 3's, Errorlog shows no disk errors.

DIAGNOSIS: During self test after power up, MDS fails:

              WDC failed ERR = 5A, STS = 0002

           Also fails using scan test under dutil:

              ERR = 1C (bad format) Command 08.

FIX: Replace BUSS cable for disk drive failing  -- MM535040

ORIGINATOR: Gil Mc Gee

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB057 Pg001

FIB 00058                                                             11/30/88

             *** Crashes with codes 0, 30 & 45 and System Hangs ***

SYMPTOM: System crashes with codes of 0, 30, 45 and system hangs, although any
         type of crash could occur with this failure.

PROBLEM DETERMINATION: If a 4/8 way port receives a mixture of bad parity
                       followed by a stream of good parity data, in a repetitive
                       manner, memory may get corrupted and cause a wide variety
                       of symptoms.

FIX: Carefully observe the ERRORLOG for any ports logging errors, also quiz all
     operators for any unusual display problems that may have occurred prior to
     the system crash/hang.

     This problem can be caused by defective terminals, phone line/modem/mux
     problems, defective/unterminated data cables, turning terminals off/on
     repetitively, etc. Eliminate all possible causes of serial port data
     errors. It is also a good idea to have all serial devices left powered on
     all the time the system is operational.                                 

     The problem was identified on a 4000 system at 7.4B, but could conceivably
     occur on any SPx system. It is hoped that this problem will be corrected in
     a future O.S. release.

This problem appears to be worse on a heavily loaded system, and may not require
many repititions of the bad/good data to cause a failure.

Also the system may crash (or hang) several minutes after the data stream has
stopped (could be a varying length of time before the corrupted area of memory
is accessesd).

ORIGINATOR: Norm Jones

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB058 Pg001

FIB 00059                                                             12/12/88

                   *** Error in 2500/3000 Service Manual ***

SYMPTOM/TEXT: In Manual #M8108 the section where it explains the jumper settings
for the CMB board is incorrect for jumper 24,25 & 26.                           
            J24 to J25 force a dump                                             
            J25 to J26 will do warm boot                                        

FIB #8 in the SPx Handbook is correct.

NOTE: There are SEVERAL revision levels of the 2500, 3000, and 4000 Service  
      Manuals, some of them are incorrect some are not. For correct jumper/SW.
      settings, consult the Handbook section of the FIBs, these are corrected
      as soon as an error is made known.                                     

ORIGINATOR: John Tank

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB059 Pg001

FIB 00060                                                             05/12/89

         *** New 1/2" Streamer Tape Controller (STC)  [ WPSF 487R ] ***

 A new 1/2 inch Streamer Tape Controller (STC) is now available for all BOSS/IX
 systems.  This new controller is a replacement for the current SCSI Bus Adapter
 and NCR ADP-52 controller subsystem.  It supports 1/2 inch tape drives using
 the Pertec (1600 bpi) format.  The STC can be used with the MAI
 2000/2500/3000/4000 systems.

 o  There are no O.S. restrictions for the STC controller.

    WARNING:  For all diagnostic releases the "MTS LOGIC TEST" will fail     
              on test #7; the error message will read "Bus Error While
              Bus Master".  This error will prevent other tests from
              running.

       *** This will be fixed on a future diagnostic release ***

   MBF P/N            NACS P/N                 DESCRIPTION

  903639-001          MM002679           1/2 inch Mag Tape Streamer
                                         controller PCBA                     

  907065-005          MM002680           25 Foot Cable (2 ea. required)
     or
  907065-006          MM002681           10 Foot Cable (2 ea. required)

                             Cable Connection

 _____________________________________________
|                                     |---|   |
|                                     | J |   |
|     1/2" Tape Controller            | 4 |<---------------*
|          (top view)                 |---|   |            |
|                                             |            |
|                                     |---|   |            |
|                                     | J |   |            |
|                                     | 3 |<-----------*   |
|                                     |---|   |        |   |
|   _________________    __________________   |        |   |
|  |      J2         |  |       J1         |  |        |   |
|  |_________________|  |__________________|  |        |   |
|_____________________________________________|        |   |
                   to CMB                              |   |
                                                       |   |                 
                                                       |   |                 
     ______________________________________________    |   |                 
    |                                              |   |   |                 
    |               Cipher Tape drive              |   |   |
    |                  (rear view)                 |   |   |
    |                                              |   |   |                 
    |  ________   ________     _______   ________  |   |   |
    | |   P1   | |   P2   |   |   P1  | |   P2   | |   |   |                 
    | |________| |________|   |_______| |________| |   |   |
    |_____________________________^__________^_____|   |   |                 
                                  |          |         |   |                 
                                  |          *---------|---*                 
                                  *--------------------*                     

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB060 Pg001

NOTE: There are no switches to be set on the STC PCBA, but there are 10 jumpers
      which should be set as follows:

                     JP 1 --- out             JP 6 --- 2-3
                     JP 2 --- 1-2             JP 7 --- 1-2
                     JP 3 --- 1-2             JP 8 --- 1-2
                     JP 4 --- 1-2             JP 9 --- 1-2
                     JP 5 --- 1-2             JP 10 -- 1-2

ORIGINATOR: C. Figueroa/N. Jones

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB060 Pg002

FIB 00061                                                             01/25/95

                    *** Dump Report Form  [ WPSF 496C ] ***

Refer to GENERAL-BASIC FOUR-ADMINISTRATIVE FIB 12 for the current dump report
form.

ORIGINATOR: Norm Jones

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB061 Pg001

FIB 00062                                                             05/12/89

    *** Configuring the 2ND & 3RD Parallel Ports on a 4000  [ WPSF 542 ] ***

 On the system 4000 there are 3 parallel printer ports, the first 
 parallel port is always port 2, in the configure utility.  However, 
 the 2nd and 3rd parallel ports will always be the LAST two configur- 
 able ports. 

 EXAMPLE:  If you have a 4000 with 3 8-ways, then you will have 29 
           ports (0 thru 28).  Of course, port 2 is a parallel port 
           and ports 27 and 28 are also parallel.  If you add an 8-way, 
           increasing your ports to 37, then ports 35 and 36 become the 
           parallel ports.  You will not have to change the 
           configuration of ports 27 and 28 because it will move with 
           the port assignment. 

 You will never be able to configure the last 2 ports as terminals 
 because they are reserved as parallel ports.  The physical position 
 never changes because these ports are located on the EIA board in the 
 main chassis of the system.                                                 

ORIGINATOR: D. Arteritano

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB062 Pg001

FIB 00063                                                             06/09/89

    *** CAUTION... Possible Superblock Corruption while updating Diags. ***

SYMPTOM/TEXT: Use caution when updating the Diagnostic partition on all SPX     
systems. If the update is aborted either purposely by use of ^C or more         
commonly due to insufficient space within the Diagnostic partition, the Super-  
block on Drive 0 can become corrupted.                                          

FIX: Use the usb command from the <admin> prompt to see if the Diagnostic       
partition is large enough to accommodate the new Diagnostics (usb /dev/rwd0).   
When creating new Diagnostic partitions, set them up with a size of 2000 blocks.
7.3 Diags should fit in a partition of 1300 blocks, 7.4 may require slightly    
more. The new 7.5B will require more space, a size of 2000 blocks leaves room   
for future updates. As a rule, DO NOT attempt to install 7.5B diagnostics into  
a partition smaller than 2000 blocks.                                           
DO NOT abort this process for any reason...                                     
ORIGINATOR: Barry Matthews  

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB063 Pg001

FIB 00064                                                             07/21/89

  *** Controller Stack Support Bracket is now available for older systems ***

The bracket used to support the controller boards on present production
2500/3000/4000 CCAs is now available to the field to upgrade older systems
without the bracket. The wedge shapped bracket holds in place all the
controller boards plugged in the CMB board.

The bracket is very effective in supporting the controllers during shipment
and during normal system operation.

To upgrade older systems without the bracket, order the following:

  MM533022/916362-001  BRACKET ASM, PCBA SUPPORT

IMPLEMENTATION: This is not a mandatory change. Install as required.

Reference: ECN 13336

ORIGINATOR: JAVIER VAN OORDT

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB064 Pg001

FIB 00065                                                             08/01/89

                         *** SPx Systems 'Help' Key ***

SYMPTOM/TEXT: On the SPx systems you are sometimes instructed to use the        
'HELP' key. On the 4312 & 4313 VDT's this key does not exist.                   

FIX:.Hold down the 'Crtl' key and depress the 'Z' key.                          
ORIGINATOR: Myron Kern  

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB065 Pg001

FIB 00066                                                             08/08/89

          *** CMB board - problems during replacement/installation ***

This FIB covers two problems that may be encountered during the replacement  
of CMB boards in the 2500/3000/4000 CCAs.

  o  Mechanical Interference between the CMB board connector plate and the
     CCA rear panel.

  o  Location of four nylon washers on the screws used to attach the CMB to
     the CCA standoffs.

1. Mechanical Interference.

This problem may occur when using CMBs P/N 903631-003/MM532520 and P/N
903631-004/MM532550 to replace a defective system board.

Late production CMBs have a wider connector plate that interferes with the
rear panel. The extra width prevents the CMB from seating properly on the CMB
standoffs. ECN 13886 has been released to correct this problem in future
production boards.

To get around this problem in the field, loosen/remove the CCA rear panel
before aligning the CMB to the standoffs. After the CMB screws are tighten,
reinstall the rear panel, do not tighten the screw on the lower right corner
if the interference is greater than 1/8 inch.

2. Location of nylon washers.

The four plastic washers used to mount the CMB to CCA standoffs should be
installed between the CMB and the head of the screw to prevent edge shorts.

  o Install washers in screws at locations: 1F, 1H, 1L, and 1P/R.

Systems manufactured before 4/4/88 were assembled incorrectly with the washers
between the CMB and the standoffs.  Remove the washers and reinstall them as
indicated above.                                                             

Spare washers may be obtained by ordering the following P/N:

  o YY009499/210008-024  NYLON WASHER NO. 6

ORIGINATOR: JAVIER VAN OORDT

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB066 Pg001

FIB 00067                                                             10/12/89

           *** Power Supply Modification on 2000 to 2500 Upgrades ***

 The 2000 power supply is the same power supply used with the 2500
system. On a 2000 to 2500 upgrade (Marketing code BE011AA) the supply is
removed from the 2000 system and placed into the 2500 box. It is necessary
to make one minor modification to the power supply so it will fit on the
2500 CMB. The CMB connector to the power supply extends 1/4" beyond the
supply on the side where the supply screws into the CMB. Thus an
approximately 1/2" section of sheet metal on the corner of the supply must
be removed to allow proper insertion of the supply on the CMB. This section
can be cut or folded back diagonally. Supplies (MM532525) for the 2500
already have this ECN  (12939) done.

ORIGINATOR: Kim Yaworsky  

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB067 Pg001

FIB 00068                                                             02/01/90

              *** Problems adding Maxtor 380mb SCSI disk drive ***

SYMPTOM/TEXT: After adding a new SCSI disk drive to an 3/4000, got errors on the
usb command. The system could not read the superblock. Reformating the drive    
using.FAVI did not change the symptom, even though it formatted fine.           

FIX: These drives can also be used on the MPX systems. We got two drives that   
were formatted for MPX (1024 bytes per sector), using the capacity command in   
FAVI will show this. The DSC diag will also fail the superblock test. If the    
standard format is used in FAVI it will read how it was formatted and re-do the 
drive using 1024/sec. It must be formatted using the non-standard option,       
changing.the bytes per sector to 200 (hex) and blocks per track to 36 (hex).    
NOTE: Some older models of the 380MB drive must be formatted using 35 hex blocks
      per track.  Use 36 hex and try to format.  If this fails then try 35 hex.

ORIGINATOR: Doug Hampson  

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB068 Pg001

FIB 00069                                                             10/25/89

    *** WDC must have LARL of "P" to support greater than 8 MB of memory ***

 A 3000 or 4000 system MUST have the WDC controller (MM531150) at a
LARL of "P" for the system to recognize over 8MB of memory. Pay particular
attention to this on memory upgrades of older systems.

ORIGINATOR: Kim Yaworsky  

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB069 Pg001

FIB 00070                                                             11/01/89

                   *** System time reverting to 00:00:00 ***

 Resetting the system time in SPX, MPX or BBIII systems can be
accomplished by using the BASIC command SETTIME. To set the system time to
00:00:00 you would use the statement 0100 SETTIME0. It changes the value of
the TIM system variable to 00:00:00.

 Two accounts (one SPX and one MPX) were experiencing problems with
their system times reverting to 00:00:00. Hardware did not fix the problem.
A global search was done on the applications programs for the SETTIME
command but none were found. However when a global search was done on the
entire system a match was found in a GAMES program, the Word Unscramble
Game. It used to come standard on BBIII systems. Both of these accounts had
previously upgraded from BBIII systems and kept their GAMES programs on the
system. Apparently some employees had found out about the GAMES programs on
the system and every time they used Word Unscramble it would cause the
system time to revert to 00:00:00. This caused serious problems with
applications programs that needed the correct system time. 

 Statement 2010 in program .GAMES.%3!12 was the culprit. You can change
the statement to a REM statement but the best solution is to just delete
the program.

ORIGINATOR: Kim Yaworsky  

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB070 Pg001

FIB 00071                                                             04/04/94

                      *** CMB Board appears to be DOA ***

PROBLEM 1: CMB PCBA 903631-004/005 boards must have jumper 46 to 47 (boot
PROM size) which gives it the ability to support SCSI drives. CMB boards -001 &
-003 use jumper 47 to 48 (refer to SPX HANDBOOK FIB 8).

PROBLEM 2: CMB PCBA does not communicate with console terminal.

FIX 2: While installing the plastic PCBA bracket on the CMB PCBA ,it is very
easy to dislodge jumper 1-2 in location 16F (master oscillator). It is difficult
to see this jumper after the PCBA bracket is installed. Be sure the jumper is in
place.

ORIGINATOR: John Tank

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB071 Pg001

FIB 00072                                                             02/01/90

           *** Improper format on Maxtor 380 MB SCSI disk using FAVI ***

SYMPTOM: FAVI finds, formats and tests the drive, but when trying to set up
         the drive for use, a message is displayed "error updating superblock -
         drive off line" or "cannot update os drive off line" with an error -89.

TROUBLE DESCRIPTION: The drive is formatted in the MPx format of 1024
                     bytes per sector.  Using FAVI, formatting using the
                     STANDARD format will not correct the problem because
                     the format parameters are stored on the SCSI drive.     

FIX: Using FAVI, select NON-STANDARD format and change parameters to match SPx
     system.

The parameters (mode sense information) must be set as follows:

Formatting Parameters   (all data is hexadecimal)
---------------------

       Tracks per zone :  8
 Alt. Sectors per zone :  5
  Alt. tracks per zone :  0                                                  
Alt. tracks per volume :  10
     Sectors per track :  36     (If formated for MPx this will be 1C)
      Bytes per sector :  200    (If formated for MPx this will be 400)
     Interleave factor :  1
     Track skew factor :  0
  Cylinder skew factor :  8
        Sectoring flag :  40

     Sense data length :  1F
           Medium type :  00
         Write protect :   [ disabled ]                                      

Disk Drive Geometry
-------------------

             Cylinders :  660
                 Heads :  8
           Precomp cyl :  0
    Read/write current :  0
             Step rate :  0                                                  
          Landing zone :  0

 As with a standard format you still may not interrupt the format process
or the drive will not function and need to be sent back to maxtor to be re-thumb
printed for MAI Basic Four.

 Once this procedure has been completed, a standard format may be selected.
Because FAVI uses the parameters from the previous format when a standard format
is selected, this procedure should only need to be performed once to correct the
table of format parameters. This should only affect add on disks to existing
systems and not new systems.

NOTE: Some older models of the 380MB drive must be formatted using 35 hex blocks
      per track.  Use 36 hex and try to format.  If this fails then try 35 hex.

ORIGINATOR: Gordon C. Cox/H. Mitchell  

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB072 Pg001

FIB 00073                                                             01/25/95

        *** SCSI Disk Installation Instructions  [ WPSF 567 & A1/2 ] ***

 HARDWARE SETUP

 These are the hardware and software requirements for installing
 the SCSI disk drive on SPx systems.

 o  SW1 settings are the same for the 2500 and the 3000/4000.

 o  The 2500 only supports 1 disk drive.

 o  SCSI disks are not supported on the 2000.
 DUAL SCSI CONTROLLER (DSC) SW1 SWITCH SETTINGS

 DSC#  SW1- 1 | 2 | 3  | 4  | 5  | 6  | 7  | 8 | 9 | 10 | 11| 12
  1        off|off| ON | ON | ON |off | ON |off|off|off |off|off
  2        off|off| ON |off | ON | ON |off |off|off| ON |off|off

 JUMPER SETTINGS ON 380 MB SCSI DISK FORMATTED TO 347 MB

 JUMPER   MBF SETTING  DESCRIPTION

 JP-10    JUMPER        FACTORY TEST ONLY
 JP-11    JUMPER        FACTORY TEST ONLY
 JP-14    JUMPER        JUMPER FOR SPINUP WITH POWER
 JP-15    OPEN          FACTORY TEST ONLY
 JP-16    OPEN          FACTORY TEST ONLY
 JP-17    OPEN          FACTORY TEST ONLY
 JP-18    OPEN          JUMPER FOR WRITE PROTECT
 JP-26    OPEN          FACTORY TEST ONLY
 JP-32    JUMPER        FACTORY TEST ONLY
 JP-33    JUMPER        FACTORY TEST ONLY
 JP-34    OPEN          JUMPER FOR EXTERNAL TERMINATOR POWER

 JP-35    JUMPER        SCSI ID=5    The SCSI id must be 5 as the
 JP-36    OPEN          SCSI ID=5    first or second drive on the
 JP-37    JUMPER        SCSI ID=5    DSC.

 JP-38    OPEN          JUMPER FOR START COMMAND
 JP-39    JUMPER        FACTORY TEST ONLY
 JP-40    JUMPER        JUMPER FOR PARITY ENABLE
 JP-41    JUMPER        JUMPER FOR INTERNAL TERMINATOR POWER

 DSC INFORMATION
 The part number for the DSC is 903667-001.
 The DSC will support 2 drives; drive 1 on J3, drive 2 on J4.
 Each drive should have an id of 5.
 Each drive MUST have a terminator.
 Each drive has a single SCSI cable, # 916237-002
 PA of the SCSI cable is attached to J3 or J4 of the DSC and
 PB is attached to the SCSI disk.

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB073 Pg001

 JUMPER SETTINGS ON 280 MB SCSI DISK FORMATTED TO 245 MB

   JUMPER       MBF    DESCRIPTION                                           
   280 MB *   SETTING

   1      2

 JP-21  JP-1   JUMPER   FACTORY TEST ONLY
 JP-41  JP-3   JUMPER   FACTORY TEST ONLY
 JP-42  JP-7   OPEN     JUMPER FOR WRITE PROTECT
 JP-43  JP-2   JUMPER   FACTORY TEST ONLY
 JP-44  JP-8   JUMPER   JUMPER FOR SPINUP WITH POWER
 JP-81  JP-10  JUMPER   INTERNAL TERMINATOR POWER
 JP-82  JP-9   OPEN     EXTERNAL TERMINATOR POWER

 JP-83  JP-12  JUMPER   SCSI ID=5    The SCSI id must be 5 as the
 JP-84  JP-13  OPEN     SCSI ID=5    first or second drive on the
 JP-85  JP-14  JUMPER   SCSI ID=5    DSC.

 JP-86  JP-15  JUMPER   JUMPER FOR PARITY ENABLE
 JP-87  JP-16  JUMPER   JUMPER FOR POWER SPIN DELAY**
 JP-91  JP-4   JUMPER   FACTORY TEST ONLY
 JP-92  JP-5   JUMPER   FACTORY TEST ONLY
 JP-93  JP-6   JUMPER   FACTORY TEST ONLY
 JP-94  JP-11  JUMPER   FACTORY TEST ONLY

  * Column 1 is for PWB 1012539, Column 2 is for 1014382.

 ** JP-44 or JP-8 overrides this jumper.

 The following configurations of Winchester Disk Controllers (WDC)
 and Dual SCSI Controllers (DSC) are allowed per chassis.

 An easy rule to follow, no matter what kind of disk controller you
 are adding, if you are putting a SECOND disk controller in a                
 chassis, address the controller the way you would address the
 SECOND controller of that type.
 A.  All WDC's, no DSC's.
     First WDC addressed as    WDC #1
     Second WDC addressed as   WDC #2 (if present)

 B.  Combination of WDC's And DSC's.
     1) WDC as primary
        WDC addressed as       WDC #1
        DSC addressed as       DSC #2

     2) DSC as primary
        DSC addressed as       DSC #1
        WDC addressed as       WDC #2

 C.  All DSC's, no WDC's.
     First DSC addressed as    DSC #1
     Second DSC addressed as   DSC #2 (if present)

 SOFTWARE SET-UP

 SCSI disk drives are formatted using F.A.V.I., counterpart to
 'dutil' for the other winchester drives.  Make sure that the
 sectors/track are hex 36 for the 380 MB and 1A for 280 MB.
 bytes/sector should be hex 200, for the 380 MB and 280 MB disk
 drives.

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB073 Pg002

NOTE: Some older models of the 380MB drive must be formatted using 35 hex blocks
      per track.  Use 36 hex and try to format.  If this fails then try 35 hex.

 Each drive must have 2 device files created for the system to re-
 cognize it.  The /dev files for wd1 should already exist.

 ADMIN> makedev /dev/wd2 B 14 64     NOTE:  ALWAYS use uppercase U
 ADMIN> makedev /dev/rwd2 U 14 64           and B when doing a
                                            makedev.

 In the steps that follow, it will be necessary to use the makedev
 command again.  The devices made will be for the filesystem names
 on the wd's.

 OTHER DRIVES ARE:

 wd       dev #         filesystem #
 wd1      32            33
 wd2      64            65                                                   
 wd3      tape drive position
 wd4      128           129
 wd5      160           161
 wd6      192           193
 wd7      224           225

 The superblock must be accessed and changed to create the file-
 system on the disk drive.

 ADMIN> usb /dev/rwd(x) -get desc=drive(x)  (x) is the drive number

 The above command creates a string file which must be changed to
 set-up the partition for the drive.

 ved the file, ADMIN> ved /etc/diskdesc/drive(x)

 Press <CTRL-N> to move the cursor to the last line.  Change the
 last line to be:  1:0:-1

 Press <CTRL-D> to delete any characters.  Press <CTRL-C> to end
 and Press <Y> to save the edits.

 Now save the partition definition on the disk.
 ADMIN> usb /dev/rwd(x) -save -set type=drive(x)

 After the parameters have been saved on the disk, the buffered and
 unbuffered devices must be created for the filesystem.  When the
 devices are created the unbuffered device should begin with "r"             
 which is for 'raw device'. Enter the following:

 ADMIN> makedev /dev/rdrive(x) U 14 (y)   (x) is the drive number
                                          (y) is the filesystem
 ADMIN> makedev /dev/drive(x) B 14 (y)        from the previous
                                              page.
 The devices have been defined, now the filesystem can be created.

 ADMIN>makefs /dev/rdrive(x)

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB073 Pg003

 To verify that the filesystem has been correctly partitioned, use
 the space command.

 ADMIN>space /dev/rdrive(x)

 The filesystem must be mounted for the system to access it.
 Create a directory to mount the filesystem on.  Do NOT create any
 sub-directories because data or programs in them will not be
 accessible once a filesystem is mounted on them.

 ADMIN>makedir /mntwd(x)

 Most systems mount the filesystem automatically when the system is
 booted.  The filesystem can be mounted by adding a line to the
 file '/etc/sinit'.  ved the file and add the following line:

 mount /dev/drive(x) /mntwd(x)
 Press <CTRL-C>, then press <Y> to save the edits.

 The system now recognizes the drive.  The prefix /mntwd(x) must be
 added to the working prefix in the customer's application
 software.

 PREREQUISITES:

 1.  The system MUST have 7.5B operating system.

 2.  The system MUST have a 903631-005 CMB.

     A. You must have the ETR of the SCSI drive and the system serial number to
        order.
     B. There will be no charge for the CMB.
     C. Verify the CMB PROM size jumpers on the -005 CMB, jumper 46 must be
        connected to 47. If this is not correct, the amber light on the CMB
        turns on and there is no message displayed on the screen.

 3.  The drive must have an id of 5.  Jumpers JP12, JP13 and JP14
     on the bottom of the drive assign the id.  JP12 and JP14
     should be jumpered and JP13 should be left open.

 4. If upgrading to 7.5B from another OS level, a configuration record is
    necessary.

 PROBLEM:     Error -89 when trying to install the operating system
              from tape.
 WORKAROUND:  Format the drive using a non-standard format
              procedure, changing bytes per sector to hex
              200 and sectors per track to hex 35.

 PROBLEM:     Cache DMA test hangs intermittently.

 WORKAROUND:  None.  Do not run the Cache DMA test.

ORIGINATOR: Dan Arteritano

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB073 Pg004

FIB 00074                                                             01/29/90

            *** Workaround for terminal hangs on OS release 7.5B ***

 Below is a BASIC program and the different ways to run it as a temporary
workaround to free terminals which become locked at the BOSS/IX screen.         
The command given in a previous message may not have worked in all cases        
because it did not clear the 8-way buffer.                                      

OTHER TIPS:                                                                     
        o  Turn off the key-repeat on terminals.                                
        o  Make sure that the cable shield is grounded to pin 1 on              
           the terminal end.                                                    

WAYS TO RUN THE PROGRAM:                                                        
        The program can be run in 4 different ways.                             
           1. Run the program when terminals are locked.                        
           2. Run the program continuously on a terminal which is               
              normally not used.                                                
           3. Run the program as a ghost.                                       
           4. Run the program in background mode.  This is preferred            
              to running as a ghost.                                            
HOW.TO RUN "TRMFRE"      
        o  To run the program when terminals are locked enter:
                RUN "TRMFRE"
                The freed terminals will be displayed then hit                  
                ESCAPE to stop the program.
        o  The program could be run on a terminal which is used                 
           infrequently and will display on the screen continuously;            
           enter:
                RUN "TRMFRE"
                The advantage of running the program in this is manner          
                is that if a terminal receives a large amount of data,          
                it will be displayed on the screen and can be viewed.
        o   To run the program as a ghost enter the following:
                START 64,"/fix/TRMFRE","G0"
                Make sure that there is a ghost configured in the vconf.        
                There will be no display.
        o  To run the program in background, a command can be created           
           to start the program.  Enter the following:
.               ved /fix/TRMFRE                                                 
                exec -d /bin/basic s=64 -nr pgm=/fix/TRMFRE.pgm                 
                CTRL-C and Y                                                    
                filemodes +x +x /fix/TRMFRE   (This will make the file          
                                               executible)
                After the system has booted, the operator can go into
CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB074 Pg001

                admin and enter /fix/TRMFRE and the program will run in         
.               background.
PROGRAM.LISTING:
                  5 REM" TRMFRE - Unlocks terminals on BOSS/IX 7.5B
                 10 BEGIN                                                       
                 20 CLEAR                                                       
                 30 SETESC 700                                                  
                 40 LET STATE=0                                                 
                 50 DIM A$(1),B$(512)
                 60 LET TTYINFO$=DEVINFO                                        
                 70 LET I=1                                                     
                 80 LET TTY$=TTYINFO$(I*10+1,5)                                 
                 90 IF TTY$(1,1)<>"T" THEN GOTO 20                              
                100 LET P=POS(" "=TTY$)
                110 OPEN(1,ERR=320)TTY$(1,P-1)                                  
.               120 LET COUNT=0                                                 
                130 PRINT TTY$(1,P-1),":",DAY,":",STR(TIM:"00.00"),":"          
                140 FOR J=1 TO 512                                              
                150 PRINT (1)'BI',                                              
                160 INPUT RECORD(1,SIZ=1,TIM=2,ERR=210)A$                       
                170 LET COUNT=COUNT+1                                           
                180 LET B$(COUNT,1)=A$(1,1)                                     
                190 PRINT (1)'EI'                                               
                200 NEXT J                                                      
                300 PRINT (1,ERR=310)'EI',                                      
                310 CLOSE(1)                                                    
                320 WAIT 2                                                      
                330 LET I=I+1                                                   
                340 IF STATE=0 THEN GOTO 080                                    
                350 END                                                         
                700 REM" ESCAPE PROCESSING                                      
                710 LET STATE=1                                                 
                720 GOTO 300                                                    
                730 END

ORIGINATOR: Harvey Mitchell

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB074 Pg002

FIB 00075                                                             12/06/91

                        *** SCSI Device Termination ***

There have been many errors in various documents regarding SCSI device
terminator orientation, this FIB is intended to give an explanation of how the
termination is accomplished and how to check for proper termination on any
internal (single-ended) SCSI bus. This FIB does NOT apply to differential SCSI
busses such as the external SCSI bus used on the external tape drives connected 
to the GPx systems.

The SCSI (Small Computer System Interface) bus must be terminated at both ends
of the bus. The SCSI controller has built in termination, however the other end
of the bus MUST BE TERMINATED at the last device and ONLY THE LAST DEVICE on
the bus. Terminator packs must be removed from any other SCSI devices on the
bus.

  NOTE: The dual SCSI Disk Controller used in the SPx systems has two
        independent SCSI buses with a single disk attached to each bus, in
        this case both disk drives MUST be terminated since the buses are
        independendent and each is on a seperate cable.

The terminators used are either SIP (Single Inline Packs) or DIP (Dual Inline
Packs) which contain 220/330 ohm networks with the 220 ohm resistor tied to +5V 
and the 330 ohm resistor tied to ground and where each signal on the bus is
connected into an individual network.

                                 +5V
                                  |
                                  2
                                  2
                                  0
                     signal ------* +3V inactive state
                                  3
                                  3
                                  0
                                  |
                                -----
                                 ---
                                  -

The signals are negative (ground) active and when properly terminated each
inactive signal should be approximately +3V.

To check for proper termination, disconnect the SCSI bus cable, power up all 
SCSI devices and measure the voltage at each SCSI device between pin 1 (ground) 
and pin 2 (Data bit 0). The signal voltage on terminating devices should measure
approximately +3V and the voltage at non-terminating devices should measure
approximately ground. Measurements at a device with the terminator packs
reversed will read approximately +2V.
Measurements can be made with a DVM or an oscilloscope. It may be easier to
connect the SCSI bus cable to the device being checked and measure the voltage
on an open bus connector, however you must be sure only one SCSI device is
connected to the cable at a time.

Use the following SCSI cable signal table to verify that all signals are
properly terminated.

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB075 Pg001

                                SCSI Bus Signals

     Ground Pins:  ALL ODD NUMBERED PINS

     Signal Pins:  2 - DB0    SCSI BUS bit 0
                   4 - DB1    SCSI BUS bit 1
                   6 - DB2    SCSI BUS bit 2
                   8 - DB3    SCSI BUS bit 3
                  10 - DB4    SCSI BUS bit 4
                  12 - DB5    SCSI BUS bit 5
                  14 - DB6    SCSI BUS bit 6
                  16 - DB7    SCSI BUS bit 7
                  18 - DBP    SCSI BUS Parity
                  20 - OPEN
                  22 - OPEN
                  24 - OPEN
                  26 - +5V    Terminator Power (from controller only)        
                  28 - OPEN
                  30 - OPEN                                                  
                  32 - ATN    Attention
                  34 - OPEN
                  36 - BSY    Busy
                  38 - ACK    Acknowledge
                  40 - RST    Reset
                  42 - MSG    Message
                  44 - SEL    Select
                  46 - C/D    Control/Data
                  48 - REQ    Request
                  50 - I/O    Input/Output

ORIGINATOR: Norm Jones

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB075 Pg002

FIB 00076                                                             12/10/91

             *** EIA SWITCH SETTING CAUSES GARBAGE ON TERMINALS ***

     BE AWARE .... The correct  switch setting for the EIA board
     switch 1    2 ,3 ,4 are on for  Rev B boards or higher .
     If this is not set correctly it has been known to cause garbage to be
     seen on all terminals that are signed on, when accessing the 2nd
     drive on a scsi controller.

ORIGINATOR: J WHALEN

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB076 Pg001

FIB 00077                  MAI COMPANY CONFIDENTIAL                   07/13/92

                    *** Securing NVRAM ICs to CMB PCBAs ***

THE PROPER METHOD TO ATTACH NVRAM ICS TO THE CMB PCBA IS AS FOLLOWS:

PARTS AFFECTED:
PCBA PART NUMBER       LOCATION
----------------       --------                                              
MM531010                 4L
MM531011                 4L
MM535025                19D
MM537025                19D
MM532550                19D
MM532551                19D

MATERIAL TO USE:
LOCTITE BLACK MAX #380 (AVAILABLE IN 1 OZ. BOTTLES AS #38050)
SHOULD BE REFRIGERATED TO EXTEND SHELF LIFE WHEN NOT ACTIVELY IN USE.

METHOD: REFERRING TO THE APPROPRIATE BOARD I.C. LOCATION, FIND THE NVRAM I.C.
ON THE CMB. YOU SHOULD BE ABLE TO DO THIS WITHOUT REMOVING THE CMB FROM THE
SYSTEM. USE A NON-STATIC GENERATING BRUSH AND SOME "CANNED-AIR" TO DUST OFF THE
AREA, THEN CLEAN IT WITH SOME ALCOHOL TO REMOVE ANY CONTAMINATION. THEN. REMOVE
THE CAP FROM THE NOZZLE OF THE BLACK MAX BOTTLE, AND SQUEEZE OUT A GOOD AMOUNT
AS YOU RUN THE BOTTLE ALONG EACH SIDE OF THE I.C. WHERE THE LEGS ARE SOLDERED
INTO THE BOARD. THE BLACK MAX SHOULD FLOW AROUND THE LEGS AND WICK-UP UNDER THE
NVRAM ITSELF TO BOND IT TO THE PCBA.
BLACK MAX IS A CYANO-ACRILATE BASED MATERIAL, IS NON-CONDUCTIVE (ACTUALLY IS AN
INSULATOR), AND TAKES ABOUT 8 HOURS TO FEEL DRY TO THE TOUCH, ABOUT 24 - 48
HOURS TO DEVELOP MAXIMUM BOND STRENGTH.

ORIGINATOR: Denny Bourgeois

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB077 Pg001

FIB 00078                  MAI COMPANY CONFIDENTIAL                   11/09/92

                 *** REMOVING DIAGNOSTICS FROM SPX SYSTEMS ***

                To remove diagnostics from an SPX   System

                Alt Load diagnostics from disk.

                <exec>service
                   At prompt enter b4bus

                <exec>l   (cr)   displays directory
                <exec>dinit      To delete all diagnostics

                answer    y  to destroy

                enter new name:  (cr)

                <exec>l  (cr)   To verify files are gone.

                <exec>shut    (cr)

ORIGINATOR: J WHALEN

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB078 Pg001

FIB 00079                  MAI COMPANY CONFIDENTIAL                   10/25/93

               *** Diagnostic errors on SCSI 760MB disk drive ***

Errors will occur under FAVI and DSC on the 760MB disk drive.  Under FAVI the
disk will format correctly.  An error will occur when the 'senddiagnostic'   
command is issued.  This error can be ignored because FAVI does not allow
enough time for the command to complete.

Under DSC, the SCSI disk controller diagnostic, test 24 of the disk logic test
will fail because it issues the same command.

Even though these errors may occur, the operating system will load normally.

BASS tests all passed without errors.

NOTE:  The SCSI ID should ALWAYS be 5 for the 760MB disk drive, as for all
       SCSI disk drives on the SPx systems.

       To set the SCSI ID to 5 set the following jumpers:

                JP37            JP36            JP35                         
                Installed       Removed         Installed

       Refer to FIB 11 of the Maxtor for the other jumpers.

ORIGINATOR: Dan Arteritano

CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB079 Pg001

FIB 00080                  MAI COMPANY CONFIDENTIAL                   01/12/96

   *** Cable, Pinout for 4/8-way to modem cable with port set for terminal ***

This is the pinout for a fully pinned SPx 4/8-way to modem cable to be used on
a port which is jumpered for TERMINAL/PRINTER:

        DB9             DB25
        PA              PB
        ---             ----
           /\        /\                                                      
  TxD    1-||--------||---3  TxD
  RxD    2-||--------||---2  RxD                                             
  RTS    3-||--------||---5  CTS
  CTS    4-||--------||---4  RTS
  DSR    5-||--------||---20 DTR
  GND    6-||--------||---7  GND
  DCD    7-||--------||---8  DCD
  DTR    9-||--------||---6  DSR
           \/--------\/   1--+                                               
           |         |       |
         shell     shell   shell

ORIGINATOR: John George/Norm Jones


CPU-BASIC FOUR-2500,3000,4000,4114------------------FIB080 Pg001


