To test old and new C64 hardware the "SYSTest64" module exists, which offers numerous test possibilities in one. All tests are controlled centrally via a ProMicro, an OLED display and a Micro-Button. A completely automatic test as well as single test areas can be selected. Thus it is also possible to test only one problem area very quickly, without having to wait for other unimportant tests. In addition to the normal harness tests, the address and data bus as well as system signals can be visually checked with the help of LEDs. In advance of the actual tests, the OLED display is used to check certain signals that are vital for a working C64, and whether these signals are present.
In addition to this, the 512KB ROM also houses several other test programs, such as:
- Visual Keyboard, Joystick,Paddles/Mouse Test
- SID Address Test
- Display Quality Test
- MIDI Test
Two free ROM slots for own ROM programs are also available, which can be started via the OLED menu.