[Coco] Faster CoCo for George... Was: Re: OT: Gramical nitpiking >My CC3>CC4
t.fadden at cox.net
Sun Sep 7 15:29:44 EDT 2008
I am no electronic engineer by any stretch of the imagination, but would
opto-isolators/couplers work for the FPGA/coco-perf's connections? It
would make it electrically isolated from each other for sure. I don't
have a clue how it would be done, but I do know they work. :-)
Joel Ewy wrote:
> George Ramsower wrote:
>> I would be tickled pink to have a 20mhz CC3 that would use my existing
>> hardware. I can easily get another keyboard and monitor. However, I
>> cannot easily replace all the stuff that plugs into a coco and the
>> software I've developed for it.
>> My CNC stuff would work faster and better also!
>> This is selfish of me, I know.
>> I want MORE in a coco.
>> More speed!
>> Just simply.... more SPEED!
> George, If you haven't already noticed Gary Becker's latest FPGA CoCo 3
> announcement in this list, you might want to take a look. It appears
> after a first glance through the documentation that there is no CoCo
> compatible hardware expansion bus implemented in this design, so hooking
> your custom CNC motor controllers up to this beast may not be possible
> without some further work. But it does run at about 20MHz, and the
> design is open. So even if you don't feel like learning how to modify
> the design to do what you want, hooking up real CoCo peripherals to the
> FPGA board is likely to be something that many other users would want to
> do, so it may well be something that others will work on for you. It is
> at exactly this point that James Jones will chime in and remind us that
> many FPGAs don't play nice with 5V logic. :) So making a CoCo
> expansion bus for this design may turn out to be non-trivial. Still,
> this is a major step in the right direction towards a faster and more
> capable CoCo for the future.
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