Zimmers.NET Files (formerly ftp.funet.fi)


The Commodore 64 CP/M cartridge has a Z80 processor running at 1 MHz. The schematic diagram of the cartridge was reverse-engineered by Ruud Baltissen. There is also some documentation on this cartridge in early prints of the Commodore 64 Programmer's Reference Guide. In later prints, the pages that originally described the CP/M cartridge were left blank.


CP/M cartridge boot disks


c64_cpm_cartridge.zip 2018-06-23 6203244
Timing and power information about the CP/M cartridge

README 1997-10-14 10999
Ruud Baltissen's technical overview of the CP/M cartridge and some comments.

schematics.gif 2020-08-04 35118
Schematic Diagram, drawn by Ruud Baltissen

schematics.hdf 1997-10-12 614
schematics.sch 1997-10-12 69646
UltiCap files of the cartridge, drawn by Ruud Baltissen. These *might* have an
error in them around U2B and U2F. Please confirm them with schematics.gif before

z80.gif 1999-01-26 48329
Another reverse engineered schematic diagram of the Z80 cartridge.
Drawn by Jerzy Sobola, January 26, 1999.
Downloaded from http://www.republika.pl/jsobola/schematy.htm.

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