Re: CP/M for any Commodore

From: Ethan Dicks (
Date: 2008-03-18 16:06:49

On Tue, Mar 18, 2008 at 2:48 PM,  <> wrote:
> Hallo Ethan,
>  > then a) bump it up to at least 32K of SRAM,
>  IIRC you need at least 48 KB of RAM for CP/M 2.2

I wasn't sure, but that makes sense.

>  > and b) add some form of UART for a console
>  Why? The idea is that the Commodore is your console and diskdrive
>  in-one. But it could come in handy for debugging.

I missed that the first time around... also, I don't have a C-64 here,
just a few PET boards.

>  > then c) work out what to do about mass storage.
>  Indeed forgot to mention that. It shouldn't be difficult to connect
>  Jim's PCB to the Z80 card. And AFAIK CP/M supports 512 bytes sectors.

Perfect - _that_ I have here.

>  I'll make a dump of the ROM of the CP/M card for the BBC. And I just
>  remembered that I should have one of Elektuur/Elektor laying around! I
>  also made PDF's of various CP/M documentation so this can help as well.

Sounds good.  I think I understand what you were suggesting now.  I'll
still be interested in seeing how it goes.

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