> There was a Z80 add-on chip that could be purchased for a C64
> or a C128.
>
> I think few people used it, tho... :-)
z80 is standard in c128, it's used only by the CP/M
mode. I don't know if it's possible to access it
at all under normal operation.
Huh, this is really offtopic... or... c128-elks...
There is acctually something called lunix
(little UNIX) for the c64 and c128. I don't
know very much about it's status but I heard
it's able to do some version of multitasking
on a c128.
http://www.heilbronn.netsurf.de/~dallmann/lunix/lunix.html
I've also heard people talking about a TCP/IP
implemntation for the c64...
/Klas