CBM, Commodore, Z-80, CPM, C-64, VIC-40
CPM Z80 Cartridge for the Commodore VIC-40

More of those sets of drawings that I found in a box dating back 30 years to when I worked at Commodore Business Machines in West Chester PA. 

Attached are some design sheets from an early Z80 CPM cartridge, I believe some are marked VIC-40 which was for a while the (internal) name of the computer that followed the VIC-20. Note also the MOS Technologies logo in the title block.

Much thanks to Mike Naberezny and his father for the work doing the scanning, and to Steve Gray for putting the bug in my ear and hooking me up with Mike.

Bil Herd


Also thanks to David Wood for the image touchup.

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