Re: cbm 8032 tests

From: Francesco Messineo <*francesco.messineo_at_gmail.com*> Date: Fri, 9 Dec 2022 16:07:27 +0100 Message-ID: <CAESs-_yWk6pK+=gQ9D2CCd+CwjQ32KGXwQT3jC7BZnXcc+85+g_at_mail.gmail.com> · francesco.messineo_at_gmail.com

On Thu, Dec 8, 2022 at 9:20 PM <ruud_at_baltissen.org> wrote:
>
> Hallo Francesco en David,
>
>
> > commodore used to have these IC clips that would go over the $Fxxx ROM
> > (or it was the CPU?
>
> CPU. The testclip can activate its own ROM by sending a signal to one of
> the 6502's not used pin that disables the original ROM.
>
>
> > I don't think these ROMs would work on non-CRTC PETs.
>
> I have testclips for the 8000 and 3000 series.

except the ROMs in 2001/2001N PETs can't be disabled from the CPU
socket, so how do they do that?

Frank