Ang: Re: CP/M programming for the C128?

From: Mikael Holm (
Date: 2003-01-28 08:44:59

Thanks for the links...

The reason for not using generic CP/M OS calls is that I use 64HDD as the 
fourth drive on my system and to attach a new disk to it I need to do the 
equivalent of: 
open 15,11,15,"$...path../newdisk.d64" : close

And it seem that the only way to do this is to not use the CP/M service 
calls, but to switch from z80 CP/M mode to 8502 mode... Then do the disk 
stuff in that mode and return to z80 CP/M when done... But this is all 
nice in theory, but I haven't got a clue as to how to do it!

// Mikael

> And what I really want to know is how to access the command channel of 
> 1571-drive from CP/M...

Why do you want to do that? CP/M does all the necessary disk handling.
Just use generic CP/M OS calls. 

Here are some useful URLs for CP/M-programming:

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