FIC 486-VAL
Logs
chipChipset
cpuSockets
PQFP196 Socket 1 (PGA169)
speedFSB speeds
20MHz25MHz33MHz50MHz
moboForm factor
LPX (max 229 x 330 mm)
dimDimensions
330mm x 218mm
chipCache
64KB128KB256KB
ramMax RAM size
64MB
ramRAM type
72-pin FPM
pwrPSU connector
AT (6-pin P8 + 6-pin P9)
connI/O ports
1x 
Floppy interface
1x 
IDE interface
1x 
PS/2 keyboard
1x 
PS/2 mouse
1x 
Parallel
2x 
Serial
1x 
VGA
cardExpansion slots
1x 
16-bit ISA
wrench 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.

notes Notes

5 ISA slots on riser card

Last updated 2025-02-04T11:06:17Z
Board info score is 8.6/10
chip Chips
cpufam CPU family support
bios 0 BIOS files available

vendor AMI - 1 entry

POST string
Note
Core Ver.
BIOS Ver.
Logs
POST string
Note
Core version
BIOS version
Logs
drv 2 drivers available
Name
Version
OS support
Size
Filename
Name
Version
2.41
OS support
Windows 3.1x
Size
445.7KB
Filename
Name
Version
2.00.18
OS support
Windows NT 4.0
Size
177.7KB
Filename
doc 2 board documents available
Release date
File
Logs
Release date
File
Logs
Release date
File
Logs
Chip
Release date
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
image1 Image 1 of 8 (Microhouse)
image2 Image 2 of 8 (Uwe Karaschewski)
image3 Image 3 of 8 (Uwe Karaschewski)
image4 Image 4 of 8 (Uwe Karaschewski)
image5 Image 5 of 8 (Uwe Karaschewski)
image6 Image 6 of 8 (Uwe Karaschewski)
image7 Image 7 of 8 (Uwe Karaschewski)
image8 Image 8 of 8 (Uwe Karaschewski)

Disclaimer

The info found in this page might not be entirely correct. Check out this guide to learn how you can improve it.