Date   : Thu, 15 Oct 1992 15:15:35 GMT
From   : cis.ohio-state.edu!zaphod.mps.ohio-state.edu!cs.utexas.edu!hellgate.utah.edu!cc.usu.edu!ivie@ucbvax.Berkeley.EDU (CP/M lives!)
Subject: Re: Will CP/M software work on any CP/M ???

In article <Bw2nv1.F52@ichaos.nullnet.fi>, jlaiho@ichaos.nullnet.fi (Juha
Laiho) writes:
> In article <9210131319.AA13429@deepthought.cs.utexas.edu> STDN%MARIST@VM.MARIST.EDU
(Dan Newcombe) writes:
>>As I remember, CP/M was based on the 8080 chip and instructions,
>>so it shouldn't be a problem, right?
>>
> One 'small' problem exists, if Rainbow uses 8080 (or 8085) chip.
> Much of the later CP/M software was written using the z80 instruction set
> that is a superset of 8080 instruction set. Thus you'll find some software
> that doesn't work. Also some CP/M software makes assumtions about control
> sequences used to clear screen, move cursor etc. Still, much of the software
> will work, I suppose.

Not true. The Rainbow has a dual-processor setup using the 8088 and Z80. I
used to run CP/M Turbo Pascal on my Rainbow all the time, and the first 
thing a Turbo Pascal procedure does on entry is muck about with the index
registers.

Roger Ivie
ivie@cc.usu.edu