| 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 80 ns |
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 |