I would like to investigate the behavior of a few custom mapper chips, and also measure the relative expansion sound volume of various Namcot 163 carts, with a self-written test program using simple means. My plan was to write and use the Everdrive N8 to run a mapper 0 program that copies itself into RAM ($000-$7FF), disables interrupts and NMI and waits for controller input. While it does that, I remove the Everdrive N8 and insert the cartridge whose properties I want to test, press a controller button, so that my program in RAM will do its test and report its results acoustically or via attribute byte changes.
Can this work, and if not, can it damage any component? I plan to use a Twin Famicom for this, so there should be no unexpected reset during the hot-plugging sequence.
Can this work, and if not, can it damage any component? I plan to use a Twin Famicom for this, so there should be no unexpected reset during the hot-plugging sequence.