Date : Sun, 15 Apr 1990 23:05:20 GMT
From : mcsun!unido!balu!tilmann%cosmo.UUCP@uunet.uu.net (Tilmann Reh)
Subject: Non-Intel Bashing...
Hi.
The exact name of the 20 MHz CMOS Z80 is : Z84C0020xxx
(where xxx is to be replaced by the case/temperature specifier)
But I personally don't see much sense in using this chip for a CP/M system.
It is intended for small and fast (TTL-I/O) controller boards. The features
you need for making any OS work aren't possible at that speed (think of DRAM
or the 4 MHz Z80-DMA).
Well, I know that the 68K is a very fine processor
(orthogonal Instruction Set, for example).
Would be my choice too, if I hadn't a Z180 system
(working on upgrade to 280).
I too am sorry that the 'standard' does not seem to be changeable anymore.
Some millions of 'these craps' won't be thrown away...
Tilmann