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VX FT MkI Motherboard Revision History

Information sourced from Mitsubishi Electric's Insight CD page (rev. 1.1.18).

Item Build
Ref		 Reason for change Rev. Date
386/25 Ethernet
P/N 12164931
REV G		 12207 Release of Rev G BOM 01 5/7/89
6845 Release SDP Chip Software 02 16/8/89
6823 Step IC82385 13137730, 13137830 03 1/10/89
12334 Corrections to BOM 04 31/8/89
12390 Corrections to BOM 05 31/8/89
12448 Amend Comp Quantities 06 4/9/89
12457 RAMDAC Fix IC168-19 to 0V 07 4/9/89
12514 Lift Sockets for 486 12171730 132 Way 08 9/11/89
12528 Release 82C451B 09 29/11/89
12532 CMOS 50MHz osc 10 29/11/89
12560 Add 2 Resistors to Prevent Hanging 387/Weitek 11 25/2/90
12542 Change C's to 22pF for 80C607 osc 12 27/2/90
7150 Gold Plated SIMMs 12175631, 12175731 13 15/3/90
7170 Release NGGL185VE Ethernet Collision Fix 14 12/4/90
7217
(7211)		 Add 2R2 MCA Ethernet Card Fix 15 9/5/90
2936 Use Hex Inverter 12132121 - 14069 16 24/5/90
7218 MCA Wait State Fix GAL501 17 7/6/90
7228 Disqualify Brooktree for 12132921 18 22/5/90
7227 Use EQXO-105OU 19 6/6/90
3361 Disqualify TFC Crystal MCA Ethernet Card Fix 20 21/8/90
3601
3640		 Change SC49, C3, C9 to 47nF 21 14/12/90
7492 Release New GAL Ethernet Collision Fix 22 17/12/90
7528 Changes to Front Panel Board 23 8/2/91
7559 Remove Ferrite Bead FE54 24 15/2/91
7632 Remove 502 Add 8392 @ IC149 25 26/4/91
7611 Uprev Security Chip 12120621 26 24/5/91
7691 "C" Step Chip Rework 27 10/5/91
15066 Change 47nF to 51nF Cap @ C3 28 30/5/91
20351 Security Software Update 29 29/7/91
Power Distribution
Board
P/N 12223731		 20850 Initial release 01 16/1/92
20933 Remove FS1, FS3, FS4 fuses 02 27/1/92
Ti Front Panel
Board
P/N 14242931		 11912 Initial release of Front Panel A 9/1/89
12067 Update BOM B 28/4/89
12100 Update BOM 14243331 01 22/5/89
12120 Update BOM 14242931 02 22/5/89
12127 Update BOMs 03 23/5/89
12121 Release PAL Software 04 15/5/89
12132 Add R70 - 2K2 & link to IC18 05 2/6/89
12162 06 8/6/89
12161 Add R6 2K2 07 9/6/89
12203 08 3/7/89
2203
2603		 Add MOD strike label 09 28/7/89
12209 10 5/7/89
12227 11 6/7/89
12246 Release VR1.00.02 PROM 12 17/7/89
12305 Change R35, 55 13 7/8/89
6902 Release VR1.00.04 PROM 14 24/9/89
2530 Infra red receiver fix 15 4/10/89
6918 Rejected, Replace R38 - R40. See 2737 16 20/11/89
7010
7402		 Release VR1.00.05 PROM 17 1/12/89
7488 Modifications for static 18 11/12/90
7599 Release VR1.00.06 PROM 19 29/3/91
20172 Fix Inverter module 20 29/7/91
15156 Fit resistors 11147521 - Q1, Q2 21 4/7/91
20332 Change EPROM 27128 to VR1.00.07 22 26/7/91
15825 Delete IC 14764731 23 1/1/93
15876 Remove D2 + D13. Add IC 11831721 24 N/A
22197 Update 131892SW to V 1.00.09 25 27/5/93
Ti Distribution
Board
P/N 14243331		 11912 Initial release of distribution brd A 9/1/89
12067 Update BOMs B 28/4/89
12100 Update BOM 14243331 01 22/5/89
12120 02 22/5/89
12182 Release of Rev D 03 26/6/89
2203
2603		 Add modification strike label 04 28/7/89
12378 Add fixings 05 28/8/89
6911 Cut track and link 06 21/9/89
7166 Remove C5, 7, 8, 9 07 14/3/90
3356 Add fixings to BOM 08 1/7/90
Ti Distribution
Drive Board
P/N 14252131		 12100 Update BOM - Artwork etc. 01 22/5/89
12203 Add modification strike label 02 28/7/89
12378 Add fixings to BOM 03 28/8/89
20146 Add 12209530 + 11124521 + 11772371 04 24/6/91
20260 Change con. 12209530 to 12213730 05 31/7/91
20985 Rework 14252131to 14938831 1/6/92
TI Distribution
Drive Board
P/N 14938831		 20985 Initial Release by R & D 01 1/6/92
21473 Add Sealing Strip to BOM 02 2/6/92
Ti Backplane
Board
P/N 14292331		 12041 Initial release A 23/3/89
12120 01 22/5/89
1978 Replace IC 80387SX 02 27/2/89
12121 Release front panel, backplane PALs 03 15/5/89
2323 Add 131235TS, 131260SW 04 21/6/89
Ti Finger Board
P/N 14335131		 12081 Initial release 01 27/4/89
6995 Release Rev C artwork 02 25/4/90
486 WC Daughter
Board
P/N 14335531		 12081 Initial release 01 27/4/89
12371 Release new PCB 02 6/9/89
12446 Amend references use B4 step 80485 03 22/9/89
12452 Uprev prog devices 04 27/9/90
12476 Release R/W SP 144539RW 05 12/10/89
12478 Release 9 PALs 06 18/10/89
12500 Release GALs & progs 07 30/10/89
12496 Extra socket at IC9, 22 08 2/11/89
12516 Add socket at IC2 09 9/11/89
12526 Add resistor at RX, C86 10 17/11/89
12533 Release Rev B GAL IC2 11 22/11/89
12527 Add socket at IC25-40 12 22/11/89
2603 Add 11772371 mod/strike label 13 20/11/89
12555 Add 4 way connector at PL1 14 20/11/89
7145 XENIX fixes 15 28/2/90
7112 Crop pins, ins sht 16 20/3/90
7112 Crop pins, ins sht 17 20/3/90
7245 Change IC GALs WDCA013,IC82385 18 15/6/90
3627 Remove 8 ICs 12122121 19 19/1/91
7532 Remove 486 B step 20 17/1/91
20098 Change 'C' to 'D' step IC 21 21/6/91
Power distribution
Board (Melco)
P/N 14731531		 13180 Initial release 01 25/3/91
13199 Update to BOM 02 19/4/91
20549 Add temporary sensor 03 24/4/91
486 Ethernet 4MB
P/N 13127231
REV G		 12223 Restructure TI to Allow Testing 01 19/7/89
2519 Release 13144231 Board Without Processor 02 22/9/89
2603 Add Mod Strike Label 03 20/11/89
7029 New Cable 04 16/12/89
2743 Fit GALs G29, G32, G79 05 15/1/90
7145 XENIX Fixes 06 28/2/90
7150 Gold Plated SIMMs 12175631, 12175731 07 15/3/90
7170 Release NGGL185VE Ethernet Collision Fix 14 12/4/90
7217
(7211)		 Add 2R2 MCA Ethernet Card Fix 15 9/5/90
2936 Use Hex Inverter 12132121 - 14069 16 24/5/90
7218 MCA Wait State Fix GAL501 17 7/6/90
7228 Disqualify Brooktree for 12132921 18 22/5/90
7227 Use EQXO-105OU 19 6/6/90
3361 Disqualify TFC Crystal MCA Ethernet Card Fix 20 21/8/90
486 Ethernet 8MB
P/N 131298311		 2223 Restructure TI to Allow Testing 01 19/7/89
2566 Replace 386 Board with Rev G "No Processor" Board 02 13/10/89
2603 Add Mod Strike Label 03 20/11/89
7029 New Cable 04 16/12/89
2743 Fit GALs G29, G32, G79 05 15/1/90
7145 XENIX Fixes 06 28/2/90
7150 Gold Plated SIMMs 12175631, 12175731 07 15/3/90
7217
(7211)		 Add 2R2 MCA Ethernet Card Fix 14 9/5/90
2936 Use Hex Inverter 12132121 - 14069 15 24/5/90
7218 MCA Wait State Fix GAL501 16 7/6/90
7228 Disqualify Brooktree for 12132921 17 22/5/90
7227 Use EQXO-105OU 18 6/6/90
3361 Disqualify TFC Crystal MCA Ethernet Card Fix 19 21/8/90
486 Ethernet 16MB
P/N 131299311
REV G		 2223 Restructure TI to Allow Testing 01 19/7/89
2566 Replace 386 Board with "No Processor" Board 02 13/10/89
2603 Add Mod Strike Label 03 20/11/89
7029 New Cable 04 16/12/89
2743 Fit GALs G29, G32, G79 05 15/1/90
7145 XENIX Fixes 06 28/2/90
7150 Gold Plated SIMMs 12175631, 12175731 07 15/3/90
386/25 4MB
Ethernet
P/N 146674311
REV G		 2982 01
3601
3640 Change SC49, C3, C9 to 47nF 21 14/12/90
7492 Release New GAL Ethernet Collision Fix 22 17/12/90
7528 Changes to Front Panel Board 23 8/2/91
7559 Remove Ferrite Bead FE54 24 15/2/91
7632 Remove 502 Add 8392 @ IC149 25 26/4/91
7611 Uprev Security Chip 12120621 26 24/5/91
7691 "C" Step Chip Rework 27 10/5/91
15066 Change 47nF to 51nF Cap @ C3 28 30/5/91
20351 Security Software Update 29 29/7/91
000/25 Ethernet
P/N 13144231
REV G		 2519 Release 13144231 Board Without Processor 05 22/9/89
12448 Amend Comp Quantities 06 4/9/89
12457 RAMDAC Fix IC168-19 to 0V 07 4/9/89
12458 Wire Mods For 486 08 4/9/89
12514 Lift Sockets for 486 12171730 132 Way 09 9/11/89
12526 Add Resistor @ C203, 202 10 17/11/89
12528 Release 82C451B 11 29/11/89
12532 CMOS 50MHz osc 12 29/11/89
12513 Release GALs IC29,32,79, Rwk 1 13 29/11/89
12586 Replace PALs IC29,32,79, Rwk 2 14 29/1/90
2467 Replace IC145 Novell Fix 15 26/1/90
2468 Replace IC29 UNIX Fix 16 26/1/90
7145 XENIX Fixes 17 28/2/90
12542 Change C's to 22pF for 80C607 osc 18 27/2/90
7150 Gold Plated SIMMs 12175631, 12175731 19 15/3/90
7170 Release NGGL185VE Ethernet Collision Fix 20 12/4/90
7217
(7211)		 Add 2R2 MCA Ethernet Card Fix 21 9/5/90
2936 Use Hex Inverter 12132121 - 14069 22 24/5/90
7218 MCA Wait State Fix GAL501 23 7/6/90
7228 Disqualify Brooktree for 12132921 24 22/5/90
7227 Use EQXO-105OU 25 6/6/90
3361 Disqualify TFC Crystal MCA Ethernet Card Fix 26 21/8/90
3403 Vendor Reworks 27 16/7/90
7402 Mods For Static 28 12/11/90
3627 Data Bus Rise Time 29 15/12/90
3601
3640		 Change SC49, C3, C9 to 47nF 30 14/12/90
7492 Release New GAL Ethernet Collision Fix 31 17/12/90
7559 Remove Ferrite Bead FE54 32 15/2/91
7632 Remove 502 Add 8392 @ IC149 33 26/4/91
7611 Uprev Security Chip 12120621 34 24/5/91
7691 "C" Step Chip Rework 35 10/5/91
20351 Security Software Update 36 29/7/91
Neptune
Motherboard TI
25MHz
P/N 13123031
REV E		 12144 Release Motherboard Assembly 13123031 For Revision Control 01 4/6/89
12202 Delete SIMMs & Daughter board from 13123031 02 (32) 29/6/89
6804 Don't Solder Wire Strap to Xtals 33 12/7/89
6806 Lift IC123 Pin 4 Add Wire Link 34 12/7/89
6807 Lift IC120 Pin 2 Add Wire Link 35 12/7/89
6808 Alternative Fix For 6772 36 12/7/89
6845 Replace 12144821 by 12120621 Sec Proc 37 18/8/89
6865 Remove 33pF Cap 38 25/8/89
6823 'C' Step Cache Controller 12131621 12137121 39 18/8/89

Content created and/or collected by:
Louis F. Ohland, Peter H. Wendt, David L. Beem, William R. Walsh, Tatsuo Sunagawa, Tomáš Slavotínek, Jim Shorney, Tim N. Clarke, Kevin Bowling, and many others.

Ardent Tool of Capitalism is maintained by Tomáš Slavotínek.
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