Qi 486 Rev 'D' Motherboard Revision History (Rev 1.1.17)

Item Build
Ref
Reason For Change Rev. Date
I/O Board Qi/Pan
+ ROM's
P/N 14898831
Rev D
20816 Initial Release 01 11/12/91
20824 Release 148953RW Specification 02 14/2/92
21057 Various Changes 03 6/3/92
21051 Update Firmware to V 1.02.23 04 16/3/92
21940 Update BIOS to V 1.02.25 05 4/3/93
21966 Update 121874SW to V1.20.02 12 22/3/93
I/O Board
(NON 82C402)
P/N 12195831
Rev D
13105 Initial Release 01 31/1/91
13183 Various Changes 02 1/5/91
20060 Various Changes 03 22/5/91
20120 Release PALs/GALs 04 27/5/91
20279 Various Changes 05 4/7/91
20243 Change SRAM etc. 06 1/10/91
20632 Fit Heat sink to IC83 07 5/10/91
PP3957 Remove Snubbers S1-3, S5-7 08 20/12/91
20878 Cut Track to Res. S2 09 11/1/92
21057 Change Resistor R179 + Capacitor C46 10 6/3/92
21298 ECO 21336 Removes ECO 21298 11 19/6/92
21966 Update 121874SW to V 1.20.02 12 22/3/93
486SX-16
CPU Board
P/N 12229231
Rev D
20956 Initial Release 01 12/2/92
21016 "
21047 Adjust Pin 17 on IC317 02 1/5/92
21214 Remove R326 03 22/5/92
486SX 25MHz
CPU Board
P/N 12214231
Rev D
20288 Initial Release 01 30/7/91
20151 Change Item 300 Oscillator 02 27/5/91
20176 Change Res.,Cap.,ICs. 03 19/6/91
20242 Change Res. + IC PAL 04 25/6/91
21047 Adjust Pin 17 on IC317 05 1/5/92
486/485 CPU Card
P/N 14709331
Rev D
13187 Initial Release 01 12/4/91
13183 Various Changes 02 1/5/91
20120 Release PALs/GALs 03 27/5/91
20279 Various Changes 04 4/7/91
20164 Release R/W Spec. 147792RW "C" 05 30/5/91
20224 Release R/W Spec. 147792RW "E" 06 29/7/91
20359 Release GALs 07 5/8/91
21053 Add IC322 12215031 08 24/3/92
21424 Release GAL IC300 Marked HCKD300B 09 28/8/92
486/485 CPU Board
P/N 14828631
Rev D
20314 Initial Release 01 29/7/91
20359 Release GALs 02 5/8/91
21053 Add IC322 12215031 03 24/3/92
21282 Change IC302 to HKD1302C 04 9/6/92
21424 Release GAL Marked HDK1300B 05 28/8/92
486 25MHz
CPU Board
P/N 12214331
Rev D
20288 Initial Release 01 30/7/91
20151 Change Item 300 Oscillator 02 27/5/91
20176 Change Res.,Cap.,ICs. 03 19/6/91
20242 Change Res. + IC PAL 04 25/6/91
21047 Adjust Pin 17 on IC317 05 1/5//92

 



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