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Qi 600 Rev 'G' Motherboard Revision History

Information sourced from Mitsubishi Electric's Insight CD page (rev. 1.1.30).

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 Change SC49, C3, C9 to 47nF 21 14/12/90
3640
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 25/2/91
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
22127 Update BIOS Software to V 1.02.23 30 25/5/93
22149 Update Keyboard Controller Software to V 1.02.25 " 25/5/93
22128 Update BIOS Software to V 1.02.21 " 25/5/93
386/25 No Ethernet
P/N 14407131
REV G		 12308 Release of No Ethernet BOM 01 8/8/89
6845 Release SDP Chip Software 02 16/8/89
6823 Step IC82385 13137730, 13137830 03 1/10/89
12391 Delete BOM, Copy From 12164911 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
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
3601 Change SC49, C3, C9 to 47nF 20 14/12/90
3640
7492 Release New GAL Ethernet Collision Fix 21 17/12/90
7528 Changes to Front Panel Board 22 8/2/91
7559 Remove Ferrite Bead FE54 23 15/2/91
7611 Uprev Security Chip 12120621 24 24/5/91
20351 Security Software Update 25 29/7/91
386/25 4MB
No Ethernet
P/N 14667031
REV G		 3601 Change SC49, C3, C9 to 47nF 20 14/12/90
3640
7492 Release New GAL Ethernet Collision Fix 21 17/12/90
7528 Changes to Front Panel Board 22 8/2/91
7559 Remove Ferrite Bead FE54 23 15/2/91
7611 Uprev Security Chip 12120621 24 24/5/91
15066 Change 47nF to 51nF Cap @ C3 25 30/5/91
20351 Security Software Update 26 29/7/91

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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