A module which plugs into the 6502 CPU socket of a Commodore PET to diagnose faults.
Designed by Tynemouth Software in United Kingdom
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Last shipping date for international orders 7th December, UK orders 14th December. EU shipping not available due to new GPSR regulations.
What is it? This is a board which plugs into the 6502 CPU socket on a Commodore PET computer to diagnose faults with the system ROM or RAM. It is compatible with the following machines: 9" PET - 200…
Read More…This is a board which plugs into the 6502 CPU socket on a Commodore PET computer to diagnose faults with the system ROM or RAM.
It is compatible with the following machines:
( * There are problems with timing of 6540 and 6550 chips on certain 2001s, consider this mode unsupported.)
It should be fine on any PET with 2114 video RAM, but does not get on with the 6550 video RAM on some early PET 2001s. If you have a PET 2001 with 6550 video RAM, you will need to replace that with something like the 6550 RAM replacement listed elsewhere in my store.
It can be used on CBM 8096 and 8096-SK, but the 64K board must be unplugged first and the system tested as if it were an 8032. It cannot be used on the CBM 8296 or any CBM-II series machines.
I repair a lot of Commodore PET computers and wanted something to help diagnose faults, so I designed this to replace the CPU in a non-booting system and display the results on the PET's own screen.
This will not actually fix the PET, it will help identify faulty parts in order to repair the PET. If a large number of faulty ROM or RAM chips are detected, it may be easier to replace them all with one of my PET ROM/RAM replacement boards - see elsewhere in my store.
The results are displayed on the screen of the PET. This needs the video circuitry to at least be partly working. However, even if there is a fault, having known data written to the video RAM can help diagnose video faults.
No PETs or other modules are included. Just the PET Diagnostics module, assembled and tested.
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Tracked shipping is recommended on international orders. Parcel will include full value declaration and may be liable to additional delays or customs fees upon arrival. Please be aware of this before ordering, there is nothing I can do about it.
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