IBM PS/2 MODEL 76 & 77 (Bermuda, SCSI) (9576, 9577)
Logs
chipChipset
cpuSocket
Socket 1 (PGA169)
speedFSB speeds
25MHz33MHz
moboForm factor
OEM / Proprietary
dimDimensions
330mm x 218mm
chipCache
None/Integrated in the CPU
ramMax RAM size
32MB
ramRAM type
72-pin FPM
pwrPSU connector
OEM/Proprietary
maxcpuMulti CPU support
no
tag Also known as
connI/O ports
1x 
External SCSI
1x 
Floppy interface
1x 
Internal SCSI
1x 
PS/2 keyboard
1x 
PS/2 mouse
1x 
Parallel
2x 
Serial
cardExpansion slots
1x 
32-bit MCA with AVE
3x 
32-bit MCA with MME
1x 
32-bit MCA with MME & BVE
notes Notes

Model 77 has 2 additional 32-bit MCA slots in the riser. The motherboards are the same.

only 39F2668 can be run at 25MHz or 33MHz, all other are 33MHz.

Further Details: https://www.ardent-tool.com/35-77/

Last updated 2026-02-13T21:27:43Z
Board info score is 8.8/10
bios 1 BIOS file available

vendor IBM - 1 entry

POST string
Note
Core Ver.
BIOS Ver.
Logs
POST string
Note
Core version
03 Aug 1992
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
1994-05
File
Logs
Chip
Release date
1991-05
File
Logs
Chip
Release date
1992-09
File
Logs
Family
Release date
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 5 (Tomas Slavotinek)
image2 Image 2 of 5 (IBM Museum)
image3 Image 3 of 5 (Microhouse)
image4 Image 4 of 5 (Tomas Slavotinek)
image5 Image 5 of 5 (Tomas Slavotinek)

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