Commodore 64 Diagnostic Rev. 586220 Harness


12 in stock



The Diagnostic Rev. 586220 is a widely accepted test tool for the Commodore C64. It tests the RAM, ROMs and the peripheral chips (VIC, SID, CIA). To test all interfaces, a feedback is required. This is provided by this harness.

GitHub project page.

SMD version with professionally SMT assembled boards. 3D printed cases.

Cartridge with Diagnostic 586220 software is available here.

Additional information

Weight 180 g