On Sun, 9 May 1999, Jonathan Hall wrote:
> Yes, you're right... The Commodore 128 was NOT a Z80. It uses the
> 6510/6502 family of processors, as did the Pet/CBM, Vic-20, Commodore 64,
> Apple II, early Atari's and the Nintendo.
This is rather getting a bit OT, but AFAIK the C128 had three
modes:
1. The C128 mode which could use the whole 128 kByte RAM, provided some
generic C128 operating system, and supported the enhanced command set
which was a 65xx superset, as the main CPU was some 65xx compatible
thingy... Remember the built in machine code monitor... :)
2. Then there was the C64 compatibility mode, which made you encounter a
generic C64....
3. And then there was CP/M for the C128, and AFAIR it was hardwardly
supplied by a Z80 which was built into the C128 - a second processor! I
may be wrong in remembering this extra chip being built in generally, that
Z80 might also have been provided by some upgrade cartridge or so...
But that would not have been a too far improvement from the C64, as you
also could get a Z80-CP/M cartridge for the C64....
So I would rather bed on the C128 having two CPUs: a 65xx compatible
one (AFAIK its was named something like V4???? I might be completely
wrong with tha part...), and a Z80... :)
Greetings,
Oli
--
Oliver Hillmann, Berlin (Germany) <[EMAIL PROTECTED]>
