z80 timing... 6502 timing

From: Mark Gregory <gregorym_at_cadvision.com>
Date: Wed Apr 21 21:43:51 1999

Now I know that many people didn't consider it a reasonable computer, but
the TMS-9900 did make a memorable appearance in the TI-99/4/4A of blessed
memory - 16K if I recall correctly. Once you added a PEB, RS-232 card, 32 K
memory card, 2 HH DS/SD floppies and an Extended Basic cartidge, it was a
fine computer.

So bite your tongue.

Cheers,
Mark "They'll pry my TI out of my cold, dead hands" Gregory

At 02:16 PM 4/21/99 -0600, you wrote:
>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 <Hans.Franke_at_mch20.sbs.de>
>To: Discussion re-collecting of classic computers
><classiccmp_at_u.washington.edu>
>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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>
>
>
Received on Wed Apr 21 1999 - 21:43:51 BST

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