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VIC-20_Diagnostics

This is a diagnostic harness and the description of the diagnostic cartridge for the Commodore VIC-20, based on the original Commodore diagnostic harness and software.

Diagnostic Harness

The Diagnostic Cartridge is based on the design for the VIC-20 Super Expander II design.

Alternatively, the Hyper Expander Cartridge can be used as a Diagnostic cartridge, too. All RAM (except the BLK5 8K block) can be installed for the Diagnostic.

Diagnostic Cartridge

The general description of the VIC-20 Diagnostics can be found in the "Top-Level Project" folder.

The Rev. 1 of the User Port PCB just has a reduced part count.and a new logo.

Please find the (C64) cassette port adapter here.

Please also refer to my website

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