Thanks to Zoran.Ģ015-01: Thanks to Boulderdash for the info about the C128 Serial Adapter.Ģ015-10: On request, I made a disassembly of the C64 Diag 781220 deadtest.Ģ016-11: Added Rossmöller / Roßmöller Doctor64 diagnostic. Thanks to SLC and Zoran.Ģ015-01: Added C-128 DCR Integral Diag 1.0 and C-128 Diag Rev.588121. This was a bit tricky to disassemble(reassemble) as it crossreferences code between $8000/$1000.Ģ015-01: Added C-64 Diagnostic (Box) (324528-02). There are also some notes about the connector at position 1.4.8 in the manual.Ģ015-01: Added disassembly of the C-64 Diagnostic Rev 4.1.0. binĢ014-11: I have now included both C128 and C128D keyboard connector schematics for Rev.785260 to avoid misunderstandings. Otherwise you must run the test a second time without the keyboard dongle, this is not mentioned in the manual.Ĭ128: x128.exe -extfunc -extfrom. C128 Diagnostic Carts use the same harness as the C64 Rev.586220 (326070-01) but with a different keyboard adapter.Ĭheck out Sven’s page for an excellent resource about the harness! He has also remedied a problem where the keyboard dongle falsifying passes the user and control port tests. It is also possible to rewire the high and low memory and then give the C64 Dead Test a second run. When the C64 side is working, use the C128 Diagnostics to verify the upper memory. If you got a C128 with a blank(blank) screen you can use the C64 Dead Test to find faulty (low) memory.

Use the C64 Dead Test if you got a blank(black) screen, it will flash the border according to which RAM circuit is broken. You will probably be fine with the C64 Dead Test (Rev 781220) and C64 Diagnostic Kit 326070-1 (Rev 586220/588220) for the C64. Some of the material below is from the web and some of them are from my own collection.

Diagnostic cartridges for the Commodore 64 / 128.Ī bunch of diagnostic carts.

Download dk 64 cartridge