[Coco] CoCo 3 Prototype - Reverse Engineered

[Phill Harvey-Smith]

Nickolas Marentes wrote:
> Allen Huffman wrote:
> 
> Nothing new to report. Mark is willing to dissect it once he takes
> care of his obligations with existing products.
> 
> Who else might we turn to for this task?

I'd be willing if I where nearer :)

> Sock Master is my best guess since he would know what to look for.
> 
> May be a good idea for Sock to have a look till Mark is ready. Best to 
> get as many eyes over it as possible.

Indeed.

> I can contact Sock to see if he has time.
> 
> It will need to have those stickers removed off the IC's though. 

Please make note of them/take high quality pictures, incase they have 
some significance that we don't yek know.

>								This 
> shouldn't be a problem since those stickers are there only as some 
> debugging aid and deface the board rather than give it any value.

A good start would be a dump of any PLD/ROM devices on the board, and a 
list of all the components (ICs would be a good start). Plus some high 
quality pictures / scans, then at least people could work on trying to 
work out the schematics for it. Does it have a GIME or is it all TTL / 
CMOS / PLD ?

At least we know what the final thing ended up like, so we know the 
achitecture of the machine, we know what it should do, reverse 
engineering the Dragon Beta was much harder, when I first looked at it 
there was only one known to exist non working board, the fact that we 
(the board's owner and I) got it working at all was a miracle....

Cheers.

Phill.

-- 
Phill Harvey-Smith, Programmer, Hardware hacker, and general eccentric !

"You can twist perceptions, but reality won't budge" -- Rush.