What is it? This is a diagnostics tool for the Commodore VIC20 Computer. It consists of a cartridge and a set of loopback plugs. Together these can be used to diagnose common faults with the VIC20....Read More…
This is a diagnostics tool for the Commodore VIC20 Computer. It consists of a cartridge and a set of loopback plugs. Together these can be used to diagnose common faults with the VIC20. There is a dedicated diagnostics cartridge, or a ROM/RAM board, which can be used for other things as well as the diagnostics.
I repair lots of old computers, including the VIC20, and it is useful to diagnose problems. The VIC20 diagnostics ROM (written by Commodore) needs to have a test harness in place in order to complete its testing, so I have put all the bits required together in one kit.
This is available as an assembled and tested set, or as a self assembly kit, or just a set of PCBs to build your own. The choice of a dedicate cartridge or a reusuable ROM and RAM cartridge give the user various options.
The cartridges are provided without a case. They can be used like this, or if you prefer, they can be fitted into either an original Commodore cartridge case, or one of the newly manufactured cases from TheFutureWas8bit (the clear version is shown in the photos).
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I write a blog about old computers, repairing them, upgrading them, replacing them. Read more at blog.tynemouthsoftware.co.uk