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PCChips M4xx (Forex)
chipChipset
cpuCPU sockets
PQFP196 Socket 1 (PGA169)
speedFSB speeds
20MHz25MHz33MHz50MHz
moboForm factor
Baby AT (max 220 x 330 mm)
dimDimensions
330mm x 218mm
chipCache
64KB128KB256KB
ramMax RAM size
32MB
ramRAM type
30-pin SIMM
pwrPSU connector
AT (P8-P9)
connI/O ports
1x 
AT Keyboard
cardExpansion slots
7x 
16-bit ISA
2x 
32-bit VLB
1x 
8-bit ISA

Also known as:

  • MICRO EQUIPMENT CORPORATION FOREX 486 VESA (Rev. VL 421A/422)

Known issues:

  • Leaky Ni-Cd clock battery

The Ni-Cd battery may be leaking, risking damage to PCB layers & nearby components. Promptly remove the battery & clean corrosion/alkaline salts from the board. Use white vinegar to dissolve salts, but exercise caution as vinegar can corrode exposed metals. A thorough examination & repair may be needed. Replace battery with guide: https://github.com/wiretap-retro/Not-A-Varta

Notes:

FR46C521A Chipset

Last updated 2024-03-13T21:24:22Z
Score is 8.3/10
0 files available

Vendor: AMI [1 entry]

POST string
Note
Core Ver.
BIOS Ver.
Last edit
POST string
40-P301-001437-072594-DGREEN-H
Note
Core version
072594
BIOS version
Last edit
pwr 1970-01-01
drv No drivers available
doc 1 board document available
Language
Release date
File
Last edit
Language
English
Release date
File
Last edit
pwr 1970-01-01

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