[Coco] What about the double speed upgrade?

[John Kowalski]

At 10:50 AM 07/01/2007 -0600, L. Curtis Boyle wrote:
>On Thu, 04 Jan 2007 22:49:25 -0600, John Kowalski <sock at axess.com> wrote:
>
>> Bob Puppo designed one too?  There was *yet another* guy who was trying  
>> to
>> do something similar at the time that I was doing mine too.  His
>> idea/approach was very different from mine, so the performance would have
>> been very different.  I don't know if he actually did build it, though.
>>
>> Does anyone know how Bob's design would have worked and how much it  
>> affected
>> CPU performance?  Was it sold?
>>
>    It was originally done on a Coco 3 around 1989, I think. It was part of  
>the original design of the TC-9 (later ditched because it require too much  
>tweaking on each manufactured board).
>

Interesting!  I hadn't heard about this before.  It might possibly run under
the exact same principle because I sat on mine for years for the same
reason.  Every different combination of CoCo3/CPU/GIME hardware required the
board to be carefully tuned to work reliably.

I ran my BBS on my overclocked CoCo 3 for years before I had internet access
and later put up web page about the clock doubler.  It was great for the BBS
- combined with a 6309, my own software and modified RS-232 hardware
(running at 38400 bps with no lost incoming characters even *during* HALT
disk IO!)
It was *very* fast.

                                         John Kowalski (Sock Master)
                                         http://www.axess.com/twilight/sock/