4 Sep
2006
4 Sep
'06
3:09 p.m.
I read
somewhere that the CP/M cartridge never actually worked all
that well. If it worked at all.
Correct. Bil Herd notes that the design didn;t fully tristate the
busses, which it needs to do for the VIC to work.
> I have the 64's service manual around here someplace, and maybe I
> should look at the differences between the various boards, I don't
> remember anything in particular there that would account for this. I
> do remember a couple of lines of that port being labeled "Z80" and
> "DMA", which I never saw anything use.
>