24 Dec
2010
24 Dec
'10
6:19 p.m.
On Fri, 24 Dec 2010, Alexandre Souza - Listas wrote:
What is needed to CREATE (and not build) a CP/M
compatible computer?
Now it got me puzzled. I have some circuit adaptations of MSX and TRS-80
computers, as minimal computers to run CP/M code. But what is needed -
beyond Z80 and 64K of RAM - to run CPM? Is there any kind of doc discussing
it?
You don't NEED 64K. CP/M can run in 16K. But, if you want a decent sized
TPA, you can have 50+ K TPA with 64K, or even 63K TPA with 128K.
8080. Yeah, a Z80 is NICE. and FAST! and some aps insist on it. But,
CP/M can run on 8080, 8085, and anything else, including emulators that
can handle 8080 code.
It's too bad that nobody brought up CP/M on the Kyoceras (Radio Shack
model 100, Nec 8200, etc). THAT would have been a project.
Or on the Epson RC20!