Daves Old Computers - MIL MOD-8

The Microsystems International Limited MOD-8 is a very early microcomputer based on the 8008 CPU, the predecessor to the famed Intel 8080. This machine was primarily intended to be used as a low cost lab/prototyping tool, however it also gained popularity with early computer hobbiests.

The machine I have is a complete MOD-8 chassis, with an unpopulated ROM and RAM card. I am still looking for parts and cards for this system. If you can help, please contact me.

The MIL MOD8 was donated by the York University Computer Muesum.

Click any photo to view a large high-resolution image.

The (nearly) complete MOD-8 system. The backplane incorporates a power supply, and circuitry for a 1702 EPROM programmer, as well as nine slots for expansion cards.

Additional views: left-front, right-rear.

Closeup of MOD-8 main chassis board.

MOD-8 cards.

Left: ROM card - holds 8 1702 EPROMs for a total of 2K ROM
Right: RAM card - holds 16 2102 static RAMs for a total of 2K RAM

View: Rear side

Early applications manual (6.6M PDF)
Later applications manual (2.3M PDF)
Great Northern Computers GNC-8 manual (6.1M PDF)

Intel 8008 Users Manual/Datasheet (6M PDF)
My own MOD8 Simulator (115k ZIP)
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Copyright 2004-2007 Dave Dunfield.