Aquarius Systems/BCOM UM 386SX
chipChipset
cpuCPU sockets
PLCC68 PQFP100
speedFSB speeds
16MHz20MHz
moboForm factor
Baby AT (max 220 x 330 mm)
dimDimensions
221mm x 216mm
chipCache
None/Integrated in the CPU
ramMax RAM size
5MB
ramRAM type
30-pin SIMM
pwrPSU connector
AT (P8-P9)
connI/O ports
1x 
AT Keyboard
cardExpansion slots
5x 
16-bit ISA
1x 
8-bit ISA

Also known as:

  • MODULAR CIRCUIT TECHNOLOGY 3SIUD

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

  • Bad/shorted tantalum capacitors

Owners of this board have reported tantalum capacitor failures on this board. Make sure there's no short before turning on this board for the first time.

Last updated 2022-04-13T09:36:59Z
Board info score is 9.1/10
2 files available

Vendor: AMI [2 entries]

POST string
Note
Core Ver.
BIOS Ver.
Logs
POST string
30-0200-DG1112-00100111-050591-UMC386SX
Note
ASI/BCOM
Core version
050591
BIOS version
Logs
POST string
30-0200-ZZ1266-00101111-050591-UMC386SX
Note
Modula Tech
Core version
050591
BIOS version
Logs
drv No drivers available

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