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CP/M 2.2 up and running on the Z80-MBC2!

A project log for Z80-MBC2: 4ICs homemade Z80 computer

8MHz Z80, 128kB banked RAM, RTC, Disk on SD, Basic and Forth interpreters, CP/M 2.2 and 3, cross Assembler and C (SDCC) toolchains

Just4FunJust4Fun 09/08/2018 at 18:240 Comments

The new IOS is out, and the CP/M 2.2 OS with it, and 16 disks are available (from A: to P:), each 8Mbyte large.

With IOS (not for IOS Lite) the SD module is mandatory to run not only CP/M 2.2 but also for the stand-alone Basic and Forth interpreters. You need a microSD card (FAT16 and FAT32 are both supported) to store the content of the SD image file, retaining the directory structure.

Pay attention on how the modules are inserted because their positions are fixed and absolutely not swappable (see the upper photo).

To add, extract or delete files inside a virtual disk (virtual disks filenames on SD are "DS0Nxx.DSK", where "xx" is the disk number) it is possible use the cpmtools or cpmtoolsGUI utilities, with the diskdefs file in the \cpmtools directory of the SD zipped file.

I suggest to use  cpmtoolsGUI (only for Windows) because is very easy.

Unzip it into a folder and put the diskdefs file in the same folder.
Select "z80mbc2-d0" only for disk 0, and "z80mbc2-d1" for the others (disk 1 - 15):

NOTE: use cpmtoolsGUI only to add, extract or delete files inside a virtual disk. Not try to create new virtual disks files with cpmtools or cpmtoolsGUI because further processing is required for a valid virtual disk file.

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