nesdev.org

It appears Rollergames uses $03 (SLO), at $C7EE - this happens almost immediately upon the start of the first level, and periodically thereafter.

I've noticed a few other games seem to use unofficial opcodes other than the ones mentioned here: http://wiki.nesdev.com/w/index.php/Tricky-to-emulate_games http://wiki.nesdev.com/w/index.php/CPU_unofficial_opcodes#Games_using_unofficial_opcodes Dynowarz uses $DA and $FA (one byte NOPs) - you can se...