non-CP/M Z80 board

[Christian Corti]

On Tue, 17 Jun 2008, Holger Veit wrote:
> The C64 does not use the 1st generation 6502, but rather a modified 8502 CPU 
> with different electrical specifications, so I guess it was explicitly 
> designed to be able to drive its special C64 peripherals. It will, admittedly 
> run into problems though with own extensions, e.g. replacements of the 
> onboard ROMs and additions to the external expansion port.

All so-called "Brotkasten" C64 (i.e. C64 model I) contain a 6510 CPU, 
which is a 6502 with some additional on-chip I/O. Later models contain a 
8500 CPU, the 8502 (the 2MHz version) can be found in the C128.

Christian