#204 Commodore 64 CP/M 2.2 Zilog Z80 cartridge emulation

[MIRKOSOFT]

Hi!
Perfect can be emulation of CP/M cartridge for Commodore 64 with Zilog Z80 CPU inside.
It makes C64 more programmable and allows CP/M 2.2 running by Z80.
In all cases Zilog Z80 CPU can be programmed also on C64 not only on C128.
I'm programming Z80 inside C128 and useful will be emulation of CP/M cartridge which allows many users access CP/M and/or Z80 CPU... think about, it will be great for all users...

Miro

[Marco van den Heuvel]

Added in rev. 30225.

[MIRKOSOFT]

Thank you boys for work!
I saw in VICE-Emu SVN History that CP/M cartridge was applied to x64 and x64sc.
I'm real 128er and it can be great to test it with x128 - you're sure asking "What a stupidity?!"
I own 128DCR with SCPU128. Everybody knows that SCPU and it's CPU WDC65816 takes control over all and if I want to use Z80 code or CP/M I must to turn it off 'cause it's impossible to reach CPU switch 8502 to Z80.
Maybe you plan in future SCPU128 emulator and there I can to be sure to find any CP/M cartridge to use this way.
In all cases 64 mode of C128 disables Z80 CPU totally and it can be great to allow 128 mode work with 128's Z80 and 64 mode work with cartridge Z80...also 128's Z80 Is downclocked to 2MHz for VIC-IIe sync, so also here will be possible to test difference of speed... think about and maybe do it. I mean if is possible to emulate cartridge for x64 and x64sc, it can to be possible for x128.
I know that e.g. SCPU64 with C128 jumps directly to 64 mode, maybe do the same CP/M cartridge.
Experiments and comparing is best way how VICE helps me and I mean many others.

Miro