Re: cbm 8032 tests

From: Bill Degnan <*billdegnan_at_gmail.com*> Date: Fri, 9 Dec 2022 10:12:14 -0500 Message-ID: <CABGJBuf+YkVYbGb03q5_Ku3-MDNA_e=fZKCZv1bid1t1hNNBXA_at_mail.gmail.com> · billdegnan_at_gmail.com

Cpu

On Fri, Dec 9, 2022, 10:09 AM Francesco Messineo <
francesco.messineo_at_gmail.com> wrote:

> 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
>
>