Re: (Fwd) Re: 8032 crt vs. 3032 crt

From: Christian Dirks <Toast_r_at_IdeaLine.info>
Date: Sun, 23 Jun 2013 12:15:27 +0200
Message-ID: <51C6CABF.1090801@IdeaLine.info>
The only thing that comes in my mind at first is the 6520 PIA at C7, 
which operates the keyboard, although this seems a bit like a last straw.

Christian

Am 23.06.2013 08:32, schrieb Ruud@Baltissen.org:
> Hallo Giovi,
>
>
> To be honest, I have no idea. So I forward your question to the
> famous CBM-hackers again.
>
>
> ------- Forwarded message follows -------
> From:	"Giovi" <stravaccato68@yahoo.it>
> To:	<Ruud@Baltissen.org>
> Subject:	Re: (Fwd) Re: 8032 crt vs. 3032 crt
> Date sent:	Sat, 22 Jun 2013 14:54:58 -0300
>
>
> Hi Ruud,
>
> I have a new question for you!
>
> With some good and expert friends at
> http://www.vintage-computer.com I took
> the decision to fix the original 3032 board.
>
> After fixing some minor problems we arrived at a dead point.
>
> The computer works (boot and answer to keyboard command) only with
> the edit
> ROM for business keyboard. It doesn't work (it hangs with a black
> screen
> while booting) with the edit ROM for graphic keyboard.
>
> We tried with basic 2 and basic 4, of course with correct set of
> Rom/Eprom.
> Same result: ok with business keyboard rom, no way with graphic
> keyboard
> rom.
>
> We checked it with a petester.bin ROM and all seems ok at least
> with this
> simple diagnostic.
>
> It *seems* that some instructions in the edit ROM (at $E000) for
> the graphic
> keyboard make it to hang.
>
>   Have you some experience/ideas about this?
>
> I also don't understand if is there any difference (jumpers,
> components...)
> between graphic keyboard assy and business keyboard assy...
>
> cheers,
> Giovi
>
>
> ------- End of forwarded message -------
>
>
> --
>     
> Kind regards / Met vriendelijke groet, Ruud Baltissen
> www.Baltissen.org
>
>
>
>
>
>
>
>         Message was sent through the cbm-hackers mailing list


-- 
Christian Dirks
Toast_r@Idealine.info



       Message was sent through the cbm-hackers mailing list
Received on 2013-06-23 11:00:08

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