TRS Coco Computers

From: Lawrence Walker <lwalker_at_mail.interlog.com>
Date: Tue Apr 6 09:08:50 1999

On 5 Apr 99 at 23:27, Ward D. Griffiths III wrote:

> On Mon, 5 Apr 1999, Marvin wrote:
>
> > What is the difference between the Coco2 and Coco3 computers? I ran across a
> > couple of the Coco computers in the collection that look like the Coco2, but
> > don't have either a 2 or a 3 on them. Also, are the cartridges that worked
> > with the Coco1 compatible with the later models? Thanks.
>
> Well, my CoCo3s all say as a minimum Tandy 128k Color Computer 3, and
> my CoCo2s indicate less memory IIRC (none within reach right now), but
> I think at least the earlier Color Computer 2s are labeled Radio Shack
> and I know none of the 3s were that I ever saw (now somebody is going
> to see one I didn't, of course -- do any of you realise how many brain
> cells I've killed since I quit Radio Shack in addition to those I
> killed doing tech support for them from '80 to '86?)
> --
> Ward Griffiths
> "the timid die just like the daring; and if you don't take the plunge then
> you'll just take the fall" Michael Longcor
>
>
I have a CoCo, 2 model 2s, and a model 3. Perhaps the ones you saw came out
between the CoCo 1 and 2. The ones TMK all just said CoCo. One of the 2s
labelled Radio Shack responds 14xxx to print mem and the other labelled Tandy
reponds 24xxx.
  The Tandy CoCo 3 has, as well as the RF jack, a video and audio
jack, and an RGB plug on the underside.
 Not to tax your brain cells overly Ward but I was just getting a color screen
and no prompt from the 3. I checked inside breaking the seal and voiding my
warranty ( :^) )and saw 4 sockected 4464 chips (mem ?) which I remounted and
one large square one which I take is MMU or ROM. All the rest including the '09
are flush mounted. I booted it again and the screen came up properly with a
prompt. I did a print mem and it responded 24xxx . Is this normal because of
banked memory or something or should I have gotten something closer to 128k

ciao larry
 

lwalker_at_interlog.com

Collectors info http://members.xoom.com/T3C
Received on Tue Apr 06 1999 - 09:08:50 BST

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