Siemens D539
Logs
chipChipset
cpuSockets
WTL4167 (PGA144) Socket 1 (PGA169)
speedFSB speed
20MHz
moboForm factor
Single Board Computer
dimDimensions
Empty
chipCache
None/Integrated in the CPU
ramMax RAM size
8MB
ramRAM type
30-pin SIMM
pwrPSU connector
Empty
maxcpuMulti CPU support
no
connI/O ports
1x 
AT Keyboard
1x 
Floppy interface
1x 
Parallel
2x 
Serial
cardExpansion slots
1x 
16-bit ISA
wrench 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 Notes

almost identical to D620 but with Socket for WTL4167 instead of i487

Last updated 2025-04-04T20:41:51Z
Board info score is 5.5/10
bios 0 BIOS files available

vendor Award - 1 entry

POST string
Note
Core Ver.
BIOS Ver.
Logs
POST string
Note
Core version
BIOS version
Logs
drv No drivers available
doc No board documents available
Chip
Release date
File
Logs
Chip
Release date
1989-08-29
File
Logs
Chip
Release date
1992-03-13
File
Logs
Chip
Release date
File
Logs
Chip
Release date
1989-11
File
Logs
Chip
Release date
File
Logs
Chip
Release date
File
Logs
Chip
Release date
File
Logs
Chip
Release date
File
Logs
Chip
Release date
File
Logs
Chip
Release date
1988-10
File
Logs
Chip
Release date
File
Logs
Family
Release date
File
Logs
Family
Release date
1989-04
File
Logs
Family
Release date
1990
File
Logs
Family
Release date
1992-10
File
Logs
Family
Release date
1992-02
File
Logs

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