• C64/C128 Diag Harness

The Diag Harness is the ultimate add-on to the Dual DiagC64 Diag and C128 Diag cartridges (it will also work with any other cartridge running the 586220 or the 785260 diagnostic ROM).

This kit is fully based on all the hard work of Sven Peterson. We wouldn't have this great kit for sale if it wasn't for him.

The unit consists of:

  • User Port Module
  • Cassette Port Module
  • Serial Loopback
  • 2 Controller Port Connectors
  • C64 Keyboard Dongle (C128 Dongle Available Here)
  • All Needed Cables

When paired with the C64 Diag or the C128 Diag cartridge, the test harness provides the needed feedback to accurately test all of the I/O connections on your C64 or C128.

Full disclaimer: A percentage of each sale goes directly to Sven.

Full manual and support can be found on our Support Wiki

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C64/C128 Diag Harness

  • Brand: Retro Rewind
  • Product Code: RR-Diag-Harness
  • Availability: In Stock
  • $75.00


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