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Qi 486 Rev 'F' Motherboard Revision History

Information sourced from Mitsubishi Electric's Insight CD page (rev. 1.6.3).

Item Build
Ref		 Reason For Change Rev. Date
I/O Board Qi/Pan
+ ROM
P/N 14953631
Rev F		 21055 Initial Release 01 13/3/92
21091 Update ROM to V 1.02.24 02 16/3/92
21940 Update BIOS to V 1.02.25 03 4/3/93
I/O Board (F1)
P/N 12220131
Rev F		 20831 Initial Release by R and D 04 10/12/91
20885 Various Res. & Diode Changes 05 19/2/92
20878 Cut Track to Res. S2 06 11/1/92
21018 Item 121, Remove Ref. R503 07 26/2/92
21048 Change Res. R124, and Cap C51 08 6/3/92
21298 ECO 21336 Removes ECO 21298 09 19/6/92
21966 Update 121874SW to V 1.20.02 10 22/3/93
16323 Change Filter from 12190130 to 12294230 11 4/7/94
I/O Board
Panther F1 Qi
P/N 12232631
Rev F		 21055 Initial release 01 23/3/92
21097 Change to BOM 02 1/4/92
21298 ECO 21336 Removes ECO 21298 03 19/6/92
21966 Update 121874SW to V 1.20.02 04 22/3/93
16323 Change Filter from 12190130 to 12294230 05 4/7/94
16 MHz/F1
Panther CPU
Board
P/N 12236031
Rev F		 21089 Initial release 01 26/3/92
21319 Reprogram IC832 with WBFC832S 02 22/6/92
21513 Reprogram IC832 with WBFC832C 03 9/9/92
21523 Reprogram IC832 with WBFC832D 16/9/92
486 SX 25 MHz
CPU Board
P/N 14987231
Rev F		 20831 Initial release by R & D 02 10/12/91
20885 Release GALs and Resistor changes 03 19/2/92
20989 Various resistor changes 04 26/2/92
21319 Reprogram IC832 with WBFC832S 05 22/6/92
21513 Reprogram IC832 with WBFC832C 06 9/9/92
21523 Reprogram IC832 with WBFC832D 16/9/92
486DX-25
+ Heatsink CPU
Qi/Pan F1
P/N 14987231
Rev F		 21320 Initial Release 01 17/6/92
21319 Reprogram IC832 with WBFC832S 02 23/6/92
21513 Reprogram IC832 with WBFC832C 03 9/9/92
21523 Reprogram IC832 with WBFC832C 16/9/92
486/485 33MHz
+ Heatsink
CPU Board
P/N 13186731
Rev F		 21125 Initial Release 01 24/6/92
21319 Reprogram IC832 with WBFC832S 02 22/6/92
21327 Fit Two Diodes 03 1/7/92
21513 Reprogram IC832 with WBFC832C 04 9/9/92
21523 Reprogram IC832 with WBFC832D 16/9/92
486DX2 - 50
+ Heatsink
CPU Qi/Pan F1
P/N 14987131 		21320 Initial Release 01 17/6/92
21423 Fit Two Diodes 11436621 02 2/9/92
21513 Reprogram IC832 with WBFC832C 03 9/9/92
21523 Reprogram IC832 with WBFC832C Rev F 16/9/92
IDT Cache
Daughterboard
P/N 12240831		 21216 Initial Release 01 20/5/92
15721 Add item 101 12004421 02 22/6/92
21312 Various changes 03 22/6/92

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.
Last update: 10 Sep 2024 - Changelog | About | Legal & Contact