Date   : Mon, 29 Oct 1990 02:57:06 GMT
From   : njin!uupsi!grebyn!bob@rutgers.edu (Robert A. Baumann)
Subject: Joan Riff and Z80M

In article <1990Oct24.233232.11580@mthvax.cs.miami.edu>, max@mthvax.cs.miami.edu
(Max Southall) writes:
> Not liking Joan's attitude as a reason for using and not paying for her
> CP/M and Z80 emulation package sounds like a rather convenient
> justification for taking advantage and saving bucks. If you feel you can't
> use her stuff in good conscience, don't use it at all. That's like saying
> it's OK to rob banks because some of them invest in South Africa! Sheesh.
> 
> References: <1990Oct19.204926.17576@techbook.com> <PLTFR2w163w@ijpc.UUCP>
<6435@plains.NoDak.edu>


Er... This is a fascinating discussion. What's intriguing to me is that
Z80MU *DOES* support the "set DMA" call perfectly well! Furthermore,
every assembler and compiler and loader that we've come across works
perfectly well under Z80MU. At least, they work perfectly well under
LEGITIMATE copies of Z80MU.

Is it possible that somebody is using a corrupted copy of Z80MU? That's
the only logical explanation that I can think of. We have seen quite a few
corrupted copies out there. Who knows how or why it happens, but that's
the breaks of Electronic Distribution. Once you let it out, you can't
control what happens to it.

I'm setting the record straight because I own Z80MU. Not a copy of it. The
*REAL* Z80MU that Joan Riff wrote for me 4 years ago and that I rewrote
myself. That's how I know that a *REAL* copy supports CP/M 2.2 perfectly
well, even down to redirecting hardware I/O port addresses to 16-bit
IBM PC port addresses for you fanatics who *REALLY* want to run a CP/M
version of KERMIT or whatever.

Drop me a line. I'll be glad to help to identify legitimate copies of
Z80MU 3.10 (the last public domain version) and Z80MU 5.2b (the
current, commercial version).

There are thousands of folks running *LOTS* of off-the-wall CP/M software
with Z80MU, and just about everything works perfectly well for them.

Gosh, maybe there *ARE* benefits to buying a legitimate copy...

  Bob Baumann
  Computerwise Consulting Services
  P.O. Box 813, McLean, VA 22101
  (703) 450-7175