I don't know if this is useful information, but I know Ruud Baltissen (from the VCF forums) wrote a very simple test kernal ROM replacement that that can be burnt to a single EPROM and displays the complete character set on the screen. Very useful for testing and troubleshooting. Philip On Dec 12, 2013, at 9:05 AM, Steve Gray <sjgray@rogers.com> wrote: > Sure, sounds good! > > Steve > > > On Dec 11, 2013, at 6:10 PM, Rob Clarke <crock@clarke-family.org.uk> wrote: > >> Hi Christian, >> >> i just scanned the "Testing the PET Computer" document that covers how it works. You can find it here: >> >> http://www.inchocks.co.uk/commodore/PET/Testing_The_PET_Computer.pdf >> >> The additional test programs referenced in the doc came on a set of tapes ( http://www.inchocks.co.uk/commodore/PET/Tapes.jpg ) most of which which you can find here: http://www.inchocks.co.uk/commodore/PET/ServicePackTapes.zip >> >> Steve, I wrote a PET diagnostic routine which tests the RAM and CRC checksums the ROM's which you're welcome to include. >> >> Rob >> >> On 11/12/2013 21:34, Christian Dirks wrote: >>> 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 >>> >> >> >> Message was sent through the cbm-hackers mailing list > > Message was sent through the cbm-hackers mailing list Message was sent through the cbm-hackers mailing listReceived on 2013-12-12 05:00:04
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