[Coco] coco3 Keyboard trouble
Bob Devries
devries.bob at gmail.com
Mon Apr 7 21:10:54 EDT 2008
John, I'd be removing the motherboard and taking off the shield that's
attached to the bottom, and checking that some creepy-crawlies haven't got
in there.
The symptoms seem to indicate that The row which connects keys K S up
arrow 3 : and ALT (PIA IC5 pin 13 or keyboard connector pin 12) is shorting
to the one which connects to E M U left arrow 5 - and F1 (PIA IC 5 pin 16
or keyboard connector pin 15)
Maybe the problem is inside the keyboard itself? Can you swap keyboards to
test this? Even a Coco2 keyboard will do for this test.
Hope that helps
--
Regards, Bob Devries, Dalby, Queensland, Australia
Isaiah 50:4 The sovereign Lord has given me
the capacity to be his spokesman,
so that I know how to help the weary.
website: http://www.home.gil.com.au/~bdevasl
my blog: http://bdevries.invigorated.org/
----- Original Message -----
From: "John T Chasteen" <johnchasteen.2 at juno.com>
To: <coco at maltedmedia.com>
Sent: Tuesday, April 08, 2008 10:41 AM
Subject: [Coco] coco3 Keyboard trouble
> Coco Teck's
>
> My brother Paul wants to set up a 128K coco3 that has been setting in a
> box for at least 8 years
> I checked the keyboard and get real weird results.
> when I strike S I see SU on the screen
> K KN or KM
> C CE
> M KM
> / /G
> ? +?=
> E CE
> U SU
> 3 35
> 5 35
>
> MOST OF THE OTHER KEYS ARE OK
>
> All help is welcomed
>
> John
>
> --
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