FIC UNI486 3SLOT
Chipset
Sockets 
FSB speeds 20MHz25MHz33MHz50MHz
Form factorLPX (max 229 x 330 mm)
Dimensions330mm x 218mm
Max RAM size
RAM type 
PSU connector
Also known as
- Unisys unknown 486 VIA VENUS board
I/O ports1x
Floppy interface
1x
IDE interface
1x
PS/2 keyboard
1x
PS/2 mouse
1x
Parallel
2x
Serial
1x
VGA
Expansion slots5x
16-bit ISA
Known issues
- Slow cache without "dirty bit" chip installed
This motherboard uses a chipset that does not support a 7+1 bit tag system for cache, and requires a dedicated SRAM chip for dirty bit tracking. If this chip is not installed, all blocks in cache will always be marked as dirty and main memory latency will be significantly higher.
- Expansion slots are on proprietary riser
The listed slots are on the riser card that came with the motherboard.
If you have this board make sure you have the riser for it.
Notes
The bios from the 486-VAL works without any issues in standard mode.
Last updated 2025-11-07T10:59:25Z
Board info score is 6.5/10
Chips
-> Chipset part
-> Human Interface
-> RAMDAC
-> Real-Time Clock
-> Signal transmitter/receiver
-> Super I/O
-> Video
CPU family support
0 BIOS files available
No drivers available
No board documents available
Chip
Release date
File
Logs
Chip
Release date
1995-11-30
File
Logs
Chip
Release date
1995-11-22
File
Logs
Chip
Release date
1994-07
File
Logs
Chip
Release date
1996-01
File
Logs
Family
Release date
File
Logs
Image 1 of 1 (cpushack)
Disclaimer
The info found in this page might not be entirely correct. Check out this guide to learn how you can improve it.