z80 timing... 6502 timing - test-drb@ccmp.vtda.org

21 Apr 1999

For the longest time, the TMS 9900 didn't appear in anything one could
consider a reasonable computer.  There was one model I saw at a colleagues
home which had expansion capability, but he often complained that cards for
interesting applications, like mass storage, etc, were not available.  I
didn't pursue it and so I believe(d) it to be true.  I saw one ad for an
SC/MP, in '77, but that one was a homebrewed model.  Other than that, it was
not of much interest here.  Was that not the case in Germany?  The processor
was still in National's data book, but I really wasn't then and am not now
of any operating system or application software for it.    I don't believe I
ever saw a real SC/MP based computer.

Dick
-----Original Message-----
From: Hans Franke &lt;Hans.Franke(a)mch20.sbs.de&gt;
To: Discussion re-collecting of classic computers
&lt;classiccmp(a)u.washington.edu&gt;
Date: Wednesday, April 21, 1999 2:10 PM
Subject: Re: z80 timing... 6502 timing

...
 > I suppose that's true, Hans, BUT, in1982, 
there were few other processors
...
 > than the 6502 and Z-80 in popular use, with the
exception of the 8080A and
...
 > the 8085, of course.  The majority of home
computers, though, used one of
> these two, at that time.  Several years later, we found the 6510 and 6809 in
...
 > commercially interesting applications, but not for
as long a period as the
...
 > Z-80 and 6502.  These two had a life of nearly ten
years before the IBM-PC
...
   and its clones
wrenched the home computer market from their grasp. 
in 1982, the 9900 was also big and beasts like SC/MP where still on
the run (and 680xx, 808x and 160xx comming up), but you're right if
you want to pich the two mayor player in the SOHO market.

But still, a general measurement includes them.

Gruss
H.

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