DesTestMAX builds on the foundation of Commodore’s Dead Test cartridge, offering a more comprehensive memory test strategy with clearer, easier-to-interpret diagnostic output.
Using the MAX (or ULTIMAX) cartridge mode, DesTestMAX places code directly in the $E000-$FFFF memory block, allowing it to take complete control of the system immediately upon reset.
Refer to the manual below on proper operation and how to diagnose issues when using the DesTestMAX cartridge.