Re: PET diagnostics

From: Rob Clarke <crock_at_clarke-family.org.uk>
Date: Thu, 12 Dec 2013 08:12:17 +0100
Message-ID: <52A961D1.1020005@clarke-family.org.uk>
Need to get to work so this is quick. The user port connector has no 
keys to prevent wrong insertion and no obious markings but this seems 
most logical. You might want to double check this against the schematics.

2-B
3-C
4-D
5-E-11
6-7-8
9-K
10-L

Keyboard connector, assuming pin 19 is the keyed pin

1-9-17
2-10-18
3-11
4-12
5-13
6-14
7-15
8-16

It's been on my to-do list to disassemble the diagnostic code in the 
basic-1 ROM's to figure out exactly how it works. I'm happy to 
collaborate on this if you want.

cheers, Rob

On 12/12/2013 07:20, Christian Dirks wrote:
> Hi Rob,
> thank you very much for your effort.These will help me a lot.
> Could you also post the connections of the dongles ?
>
> Christian
>
> Am 12.12.2013 00:10, schrieb Rob Clarke:
>> 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
Received on 2013-12-12 08:00:04

Archive generated by hypermail 2.2.0.