IBM PS/2 MODEL 76i/s & 77i/s (Lacuna, IDE+SCSI) (9576, 9577)
Logs
chipChipset
cpuSocket
Socket 3 (PGA237)
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
tag Also known as
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 
32-bit MCA with AVE
2x 
32-bit MCA with MME
notes Notes

Please pay attention that U51 is not a normal COAST slot but is for a special IBM cache module

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

only 96G1305 can be run at 25MHz or 33MHz, 95G9691 is 25MHz, 95G9692 is 33MHz.

Further info: https://www.ardent-tool.com/76_77/Lacuna.html

Last updated 2025-01-15T12:43:14Z
Board info score is 6/10
bios 0 BIOS files available
drv No drivers available
doc No board documents available
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 1 (Tomas Slavotinek)

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