[Coco] Weird CoCo 2 keyboard problem -- any ideas?

Sat Mar 30 12:34:53 EDT 2013

if you need to repair a broken trace from mylar or membrane just use this:

http://www.bareconductive.com/

On Sat, Mar 30, 2013 at 12:27 PM, Bill Pierce <ooogalapasooo at aol.com> wrote:

>
> Yep... Swap the keyboards, If it the questionable keyboard still don't
> work in the other Coco, Broken trace. If the "good" keyboard don't work in
> the questionable machine... blown PIA most likely.
>
> Bill Pierce
> My Music from the Tandy/Radio Shack Color Computer 2 & 3
> https://sites.google.com/site/dabarnstudio/
> Co-Webmaster of The TRS-80 Color Computer Archive
> http://www.colorcomputerarchive.com/
> Co-Contributor, Co-Editor for CocoPedia
> http://www.cocopedia.com/wiki/index.php/Main_Page
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>
>
>
>
> -----Original Message-----
> From: John W. Linville <linville at tuxdriver.com>
> To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
> Sent: Sat, Mar 30, 2013 12:01 pm
> Subject: Re: [Coco] Weird CoCo 2 keyboard problem -- any ideas?
>
>
> On Fri, Mar 29, 2013 at 07:33:57PM -0400, Arthur Flexser wrote:
> > Very strange.  I suppose one question one might investigate is whether
> the
> > shifted / is detected at all, but misidentified as a nonprinting
> character,
> > versus whether it is entirely unseen.  What happens if you run
> >
> > 10 PRINT ASC(INKEY$);: GOTO 10
> >
> > and type a question mark?
>
> The version above gives FC errors.  I refactored as below:
>
> 10 A$=INKEY$
> 20 IF A$="" THEN 10
> 30 PRINT ASC(A$)
> 40 GOTO 10
>
> The program above prints 47 for '/' and nothing at all for '?'.
>
> I did, however, discover that my initial report was a bit mistaken.
> I found that SHIFT-7 (the apostrophe) wasn't working either.
> This shares the same keyboard column as the '/' (aka '?') key,
> as well as the SHIFT key itself.  Sure enough, after entering
> lowercase/inverse mode (i.e. after SHIFT-0) typing 'W', 'O', and 'G'
> all work but SHIFT-W, SHIFT-O, and SHIFT-G go undetected.  Guess which
> column they all share?
>
> Swapping-out the keyboard assembly seems like a logical next step...
>
> John
> --
> John W. Linville                Someday the world will need a hero, and you
> linville at tuxdriver.com                  might be all we have.  Be ready.
>
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