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:* firstname.lastname@example.org > *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 Message was sent through the cbm-hackers mailing listReceived on 2013-12-11 21:05:23
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