Qi 900 Motherboard Revision History (Rev 1.3.3)

Item Build
Ref
Reason For Change Rev. Date
486/25 No Ethernet
P/N 14638131
REV E
12896 Initial Release 01 4/9/90
12973 BOM Changes 02 31/10/90
12991 Delete R500 03 13/11/90
12996 PAL Changes 04 26/11/90
13039 Change Connectors 05 6/12/90
13059 Add Heat sink 06 7/1/91
13082 Add SIMMs 1M x 9 80nS 07 8/1/91
13118 Change Security Proc. to Ver 2.08 08 28/1/91
13086 PAL Change IC23 & IC142 09 1/2/91
13114 20 Way Header 10 8/2/91
13174 Reprog. 12186731 to SCOE025B 11 11/2/91
7582 Remove 12162230 - Add 131165930 12 15/3/91
7611 Uprev Security Chip 12187531 13 24/5/91
20059 34 Way Header 14 17/5/91
20028 GAL Uprev IC92 15 24/5/91
20173 Add Heat sink 16 7/6/91
20092 GAL Reprog. IC26 17 7/6/91
20098 Change 'C' to 'D' Step IC (80486) 18 25/5/91
15139 Remove FE1 From Motherboard 19 14/6/91
20517 Rev 10 not actioned by Vendor PL6 P/N 11679881
21057 Change resistor R179+ capacitor C46 20 6/3/92
21966 Update 121874SW to V 1.20.02 21 22/3/93
22129 Update BIOS Software to V 1.02.25 22 25/5/93
22148 Update Keyboard Controller 15001431 to V 1.20.03 21/5/93
486/25 No Ethernet
P/N 12169931
REV B
12512 Initial Release of Rev A Board 01 7/11/89
12547 Release B Artwork 02 5/12/89
12584 BOM Corrections 03 25/2/90
12627 256k x 9 Gold SIMMs 04 25/2/90
12628 BOM Corrections 05 1/3/90
12629 Wire Mods 06 20/3/90
12644 Add Mod PR1-5 07 21/3/90
12645 Release Jedec Files 08 23/3/90
12648 Add Mod Rp1-8 09 28/3/90
12658 Video Brd Polarising 10 25/4/90
12667 Remove R124, 148 Bypass 82C321 (FP) 11 10/5/90
12700 Add Heat sink 14563430 82C452 VGA Fix 12 14/5/90
12669 MCA Wait State Fix 13 18/5/90
2936 Use Hex Inverter 12123121 14 24/5/90
12666 Add 22R Warm Boot Fix 15 17/5/90
12766 Release GAL 24VB UNIX Parity Fix 16 15/6/90
12730 Release 14573831 (486 Proc) with Heat sink 17 11/6/90
3601
3640 Change SC42, C3, C9 to 47nF 18 14/12/90
3628 Change Res. Pks on 8 IC's 19 21/12/90
7655 Rework to 143957RW 20 11/3/91
7528 Remove 12162230 Add 13165930 21 15/3/91
7655 Replace GAL SCOB024B with H 22 15/3/91
7611 Uprev Security Chip 12120621 23 15/7/91
20028 Uprev GAL 12171031 24 21/5/91
20098 Change 'C' to 'D' Step IC 25 21/6/91
20351 Security Software Update 26 1/10/91
20289 Deferred 27 20/4/92
22149 Update Keyboard Controller Software to V 1.20.03 28 25/5/93
22129 Update BIOS Software to V 1.02.25 " 25/5/93
486/25 No Ethernet
P/N 12169931
REV B
7655 Replace GAL SCOB024B With H 22 15/3/91
7611 Uprev Security Chip 12120621 23 24/5/91
20028 Uprev GAL IC89 24 24/5/91
20098 Change 'C' to 'D' Step IC (80486) 25 25/5/91
20351 Security Software Update 26 29/7/91
20289 Deferred 27
486/25 No Ethernet
M/B + Heat sink
P/N 14573831
REV B
12730 Release 12169931 with Heat sink 01 11/6/90

 



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