Chicony CH-471A (ver. 3.0)
Logs
chipChipset
cpuSocket
Socket 3 (PGA237)
speedFSB speeds
20MHz25MHz33MHz40MHz50MHz
moboForm factor
Baby AT (max 220 x 330 mm)
dimDimensions
254mm x 218mm
chipCache
32KB64KB128KB256KB512KB1MB
ramMax RAM size
128MB
ramRAM type
72-pin FPM
pwrPSU connector
AT (6-pin P8 + 6-pin P9)
tag Also known as
connI/O ports
1x 
AT Keyboard
cardExpansion slots
7x 
16-bit ISA
3x 
32-bit VLB
1x 
8-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

Last updated 2026-02-25T02:08:27Z
Board info score is 8.3/10
chip Chips
-> Chipset part
SiS 85C407 SiS 85C471
cpufam CPU family support
bios 1 BIOS file available

vendor Award - 1 entry

POST string
Note
Core Ver.
BIOS Ver.
Logs
POST string
01/18/95-SIS-85C471B/E/G-2C4I9C21-00
Note
SIS 471 for 80486 AUTO
Core version
v4.50G
BIOS version
Logs
drv No drivers available
doc 1 board document available
Release date
File
Logs
Release date
File
Logs
Chip
Release date
File
Logs
Chip
Release date
File
Logs
Chip
Release date
File
Logs
Chip
Release date
File
Logs
Family
Release date
File
Logs
Family
Release date
1996-03
File
Logs
Family
Release date
1995-07
File
Logs
Family
Release date
1995-10
File
Logs
Family
Release date
1995-12
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 2 (Microhouse)
image2 Image 2 of 2 (nvm1)

Disclaimer

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