ATARI 520 / 2014 ST /  STE Test Diagnostic CARTRIDGE.

It is very useful to diagnose your ATARI ST / STE.

Two Diagnostic Programs are loaded:
  • ST Test Ver. 4.4  (ROM SEL Jumper  1-2)
  • STE Test V1.9     (ROM SEL Jumper 2-3)
You can chose which one to run by jumper.


The Diagnostic Cartridge has two LEDs which helps you  with the diag:
1. PWR led indicating 5V.
2. ROM4 -this LED is on when CPU is reading the diagnostic Cartridge. - it should be on all the time after powering Atari. If its not on it means that CPU is not working correctly and not able reading ROM program (Means completely DEAD).

All carts are tested before shipment to make sure that you will get 100% working item.