[Coco] Trying to ID CoCo 1 board.

[Phill Harvey-Smith]

Mike Pepe wrote:
> 
> Phill,
> 
> Correction, I meant E board.
> 
> D boards only have 4 and 16k options.
> 
> E boards have 32k options, but not a 64k option. If it has a high/low 
> jumper, its an E board.

Cheers for the info, got it upgraded to 64K tried to boot Nitros, bang 
fell over...looked at the tech ref and found that like the Dragon 32, if
you upgrade to 64K, you have to patch the enable on the LS138 decoder to 
stop the rom being enabled, did that, and it now boots Nitros fine :)

Odd my other CoCo 1, also a 16K when I bought it, didn't need that, must 
have been the later "F" board.

Phill.

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

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