SPRING CIRCLE COMPUTER, INC. SS486 REV. P2C
Chipset
Socket 
FSB speeds 25MHz33MHz40MHz50MHz
Form factorBaby AT (max 220 x 330 mm)
DimensionsEmpty
Cache
128KB256KB512KB
Max RAM size
64MB
RAM types 72-pin FPM72-pin EDO
PSU connector
Also known as
- SPRING CIRCLE COMPUTER, INC. SS486 REV. P2CI
I/O ports1x
AT Keyboard
1x
Floppy interface
2x
IDE interface
1x
Parallel
2x
Serial
Expansion slots4x
16-bit ISA
3x
32-bit PCI
Known issues
- Fake cache
The motherboard may include a non-functional or counterfeit SRAM cache, which can adversely affect performance. Signs of fake cache often include soldered DIP-chips and no jumpers to set the chache size. Cache functionality can usually be restored by installing proper chips, jumpers and a BIOS update/mod.
Notes
The fake cache chips on this one had a marking: H64C512-15N, 9525 and the bios was hardcoded to show 256kB.
Last updated 2025-11-09T17:59:32Z
Board info score is 9.4/10
Chips
-> Chipset part
CPU family support
3 BIOS files available
Award - 3 entries
POST string
Note
Core Ver.
BIOS Ver.
Logs
POST string
12/08/95-SiS-496-497/A/B-2A4IBS9BC-00
Note
Reports 256kB cache (faked)
Core version
4.50PG
BIOS version
Logs
POST string
12/08/95-SiS-496-497/A/B-2A4IBS9BC-00
Note
Core version
4.50PG
BIOS version
Logs
POST string
02/28/96-SiS-496-497/A/B-2A4IBS9BC-00
Note
Core version
4.50PG
BIOS version
Logs
2 drivers available
Version
OS support
Arch
Size
Filename
Version
OS support
MS-DOS
OS/2 Warp 3.x
Windows 3.1x
Windows NT 3.1
Windows NT 3.5x
Windows NT 4.0
Arch
x86
Size
Empty
Filename
Version
OS support
MS-DOS
NetWare Server 3
OS/2 1.x
Windows 3.0
Windows NT 3.1
Arch
x86
Size
97.9KB
Filename
2 board documents available
Release date
File
Logs
Family
Release date
File
Logs
Image 1 of 5 (evasive)
Image 2 of 5
Image 3 of 5 (BreakPoint)
Image 4 of 5
Image 5 of 5
Disclaimer
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