Chicony CH-498B
Logs
chipChipset
cpuSocket
Socket 3 (PGA237)
speedFSB speeds
20MHz25MHz33MHz40MHz50MHz
moboForm factor
Baby AT (max 220 x 330 mm)
dimDimensions
220mm x 260mm
chipCache
64KB128KB256KB512KB1MB
ramMax RAM size
128MB
ramRAM types
30-pin SIMM72-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 2023-05-28T22:42:23Z
Board info score is 9.4/10
chip Chips
cpufam CPU family support
bios 4 BIOS files available

vendor AMI - 4 entries

POST string
Note
Core Ver.
BIOS Ver.
Logs
POST string
40-P307-001116-00101111-072594-UMC498-H
Note
Core version
072594
BIOS version
Logs
POST string
40-P305-001116-00101111-072594-UMC498-H
Note
Core version
072594
BIOS version
Logs
POST string
40-P303-001116-00101111-072594-UMC498-H
Note
Core version
072594
BIOS version
Logs
POST string
40-E301-001116-00111111-121593-UMC498-H
Note
Core version
121593
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
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
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 4 (deksor)
image2 Image 2 of 4 (deksor)
image3 Image 3 of 4 (Carlos S. M.)
image4 Image 4 of 4 (deksor)

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