ICL ERGOPRO C4/33, C4/33B, D4/25, D4/33D
Chipset
Socket Empty
FSB speeds 25MHz33MHz
Form factorLPX (max 229 x 330 mm)
Dimensions432mm x 368mm
Cache
128KB
Max RAM size
32MB
RAM type 30-pin SIMM
PSU connector
I/O ports1x
Floppy interface
1x
IDE interface
1x
PS/2 keyboard
1x
PS/2 mouse
1x
Parallel
1x
Serial
Expansion slotsEmpty
Known issues
- DALLAS RTC coin cell empty
The motherboard's Real-Time Clock (RTC) chip contains a coin cell that may have drained, causing the loss of CMOS settings. This can result in an inability to save settings, causing system instability or failure to boot. To fix this, the RTC chip can be replaced with an equivalent or repaired by cutting into it and soldering on a new external coin cell holder. Replacement guides are available at https://github.com/necroware/nwX287 or https://github.com/necroware/nw12887, depending on the actual chip used.
Last updated 2025-07-31T18:44:10Z
Board info score is 8.2/10
Chips
-> Chipset part
-> Floppy ctrl.
-> Real-Time Clock
-> Video
CPU family support
1 BIOS file available
ICL - 1 entry
POST string
Note
Core Ver.
BIOS Ver.
Logs
1 driver available
Name
Version
OS support
Arch
Size
Filename
Name
Version
3.50
OS support
Windows NT 3.1
Windows NT 3.5x
Arch
x86
Size
140KB
Filename
2 board documents available
Release date
File
Logs
Chip
Release date
File
Logs
Chip
Release date
1993-08
File
Logs
Family
Release date
File
Logs
Image 1 of 6 (Microhouse)
Image 2 of 6
Image 3 of 6 (stichas)
Image 4 of 6 (stichas)
Image 5 of 6 (antnik)
Image 6 of 6 (Electromyne)
Disclaimer
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