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Vintage Computers Any vintage computer systems, calculators, video games etc., but with an emphasis on 1980s and earlier equipment.

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Old 15th Oct 2021, 7:14 pm   #1
Dave Moll
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Default Commodore PET document scans

Further to this thread, here are the first scans of sections of the documents, starting with the A3 schematics:
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File Type: pdf PET schematics 1-11.pdf (2.06 MB, 32 views)
File Type: pdf PET schematics 12-20.pdf (2.17 MB, 24 views)
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Old 15th Oct 2021, 7:32 pm   #2
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Default Re: Commodore PET document scans

... and continuing with the board layouts etc:
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File Type: pdf PET board layouts.pdf (2.87 MB, 28 views)
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Old 16th Oct 2021, 8:12 am   #3
SiriusHardware
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Default Re: Commodore PET document scans

Thanks Dave - can we persuade you to post the NOP generator and any circuit description details there may be as well? It so happens we have an ongoing PET repair thread where a NOP generator may well be required in the near future.
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Old 16th Oct 2021, 9:11 am   #4
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Default Re: Commodore PET document scans

Thank you for all you effort with these scans Dave. Some of the monitor diagrams don't seem to be available on Bo Zimmerman's site or elsewhere. The remaining diagnostic/NOP pages in particular may be 'new' material and would be a valuable addition to the knowledge base available to PET restorers. If you are willing and able to continue the good work this thread could become a prime candidate for 'sticky' status.

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Old 16th Oct 2021, 3:03 pm   #5
Dave Moll
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Default Re: Commodore PET document scans

Well, here are the remaining documents. By the way, my multi-page A4 scanner does work even though the printer section is throwing up a hardware error - which is useful to know. With the A3 pages I had no alternative to scanning each page to a separate document and then merging them afterwards.
Attached Files
File Type: pdf PET maintenance course.pdf (3.22 MB, 30 views)
File Type: pdf PET NOP tester.pdf (1.83 MB, 32 views)
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Old 16th Oct 2021, 6:47 pm   #6
SiriusHardware
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Default Re: Commodore PET document scans

Thanks again Dave - you can see by the number 'views' of those posted items that this information is proving of great interest, including the latter items which probably weren't available anywhere else.

Thanks also to Dennis M who was kind enough to make the original paper documents available originally.
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