Re: PET diagnostics

Steve,
I did not look at the schematics yet ... do any earlier pet mainboards
than the 8296 activate the /CS line for the all $Exxx and leave only out
the I/O ports, like the 8296 does ? Otherwise they could only use 2K
editor ROMs ($E000-$E8FF) without modification.

Am 11.12.2013 21:42, schrieb Steve Gray:
> I may be able to include those diagnostics (or similar) in my
> cbm-edit-rom project if someone can extract the code from the original
> rom set (there is a bit of room if we use a 4K edit rom). It could
> probably even be called with a check for a key on bootup, rather
> than grounding a pin.
>
> Steve
>
>
> *From:* Christian Dirks <Toast_r@IdeaLine.info>
> *To:* cbm-hackers@musoftware.de
> *Sent:* Wednesday, December 11, 2013 3:34:10 PM
> *Subject:* Re: PET diagnostics
>
> Hi Rob,
> the used ROM set should be basic 1 according to
> http://zimmers.net/anonftp/pub/cbm/firmware/computers/pet/README.also
> I found a youtube video that claims to show 'A successful pass of the
> diagnostic rom': http://www.youtube.com/watch?v=l5E8mpfBbZg
> Unfortunately no further information :(
> Could you take a look at the documentation and dongles ?
>
> Christian
>
> Am 11.12.2013 21:13, schrieb Rob Clarke:
> > Yes, but it was only in the basic 1 ROM set. I have an original set of
> > documentation and dongles somewhere if you can't find it on-line.
> >
> > I don't recall if it displays anything though, I think it used the red
> > LED on the mainboard.
> >
> > Rob
> >
> > On 11/12/2013 21:08, Christian Dirks wrote:
> >> Hi all,
> >> does anyone know, if there really is a diagnostic routine in the PET
> >> ROMs, and if so, what it should do/display ?
> >> When I power up my 2001-8C with the daignostic pin connected to GND, it
> >> blanks the screen and nothing more seems to happen.
> >> A quick test with a 'hello world' basic program works.
> >> The used ROM set is:
> >> 6540-019, -013, -015, -016, -012, -014, -018.
> >>
> >
> >
> >      Message was sent through the cbm-hackers mailing list
>
>
> -- 
> Christian Dirks
> Toast_r@Idealine.info <mailto:Toast_r@Idealine.info>
>
>
>
>
>
>       Message was sent through the cbm-hackers mailing list
>
>


-- 
Christian Dirks
Toast_r@Idealine.info





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