[Coco] (no subject)

[Bill Pierce]

The only problem there is I don't have another working Coco. I have to trashed ones, but no working on. The whole setup worked for about an hour, then it started failing... the drives would start to boot OS9... then fail. No they won't even start. And it's the exact same for both drives. What's the likelyhood of 2 drives creating the same problems at the same moment. The Coco "seems" to be working ok... I can type in short basc programs and run them... as long as I don't use the "i" key. At this point I'm thinking of completely removing the Disto 2meg and the AT keyboard interface. Anyone know if there's anything I need to "put back" when I remove the disto? I know the 512k upgrade had a jumper that had to be clipped. I have 2 standard 512k boards, so I can at least put one of those in there. This would take out the disto as suspect.


Bill Pierce
ooogalapasooo at aol.com




-----Original Message-----
From: Robert Gault <robert.gault at att.net>
To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
Sent: Fri, Dec 30, 2011 1:25 pm
Subject: Re: [Coco] (no subject)


Bill Pierce wrote:

 Here's one for the techies...
><snip>
You did not try swapping the new Coco3 with an old one. If you know you have a 
ood Coco3, that would be a good test. Many strange things happen if the GIME 
ocket is corroded or contacts are bad. Likewise with ICs.
Looks like you don't have any known good drives to test. I'd suggest opening one 
of the new drives and make sure the LED for the disk hole is not loose or other 
echanical problems are not visible. Check the RPM with the strobe pattern.
ost certainly check the flat ribbon cable for the disk drives for continuity.
I've no idea what a bad AT keyboard interface might do but swapping the Coco3 
ould pin that down.
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