ATC/Unitron U3911-V3
chipChipset
cpuCPU sockets
DIP40 PLCC68
speedFSB speeds
10MHz12MHz
moboForm factor
Baby AT (max 220 x 330 mm)
dimDimensions
330mm x 220mm
chipCache
None/Integrated in the CPU
ramMax RAM size
4MB
ramRAM types
DIP-18 (1bit)DIP-16 (1bit)
pwrPSU connector
AT (P8-P9)
connI/O ports
1x 
AT Keyboard
cardExpansion slots
6x 
16-bit ISA
2x 
8-bit ISA

Also known as:

  • ATC/Unitron U3911-V1
  • ATC/Unitron U3911-V2

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

Last updated 2023-09-04T20:09:30Z
Board info score is 9.1/10
2 files available

Vendor: AMI [1 entry]

POST string
Note
Core Ver.
BIOS Ver.
Logs
POST string
DVL2-1160-040990-K8
Note
Core version
040990
BIOS version
Logs

Vendor: Phoenix [1 entry]

POST string
Note
Core Ver.
BIOS Ver.
Logs
POST string
Note
P/N 891012 - 80286
Core version
3.10 00
BIOS version
Logs
drv 1 known good driver available
Name
Version
OS support
Size
Filename
Name
Version
1.02
OS support
MS-DOS
Size
52.5KB
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Name
Version
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Name
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1.00
OS support
MS-DOS
Size
31.9KB
Filename
doc 1 board document available
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