This needs some investigation. Discuss ideas and findings on the talk page. Specifically: see if these button combinations trigger debug functions. It does not appear to set any flags in RAM.
PS7101.1P LEVEL.1P TRIG.1P ON TRIG.1P OFF TRIG.AXLR
BYSSUDLR.2P LEVEL.2P TRIG.2P ON TRIG.2P OFF TRIG.
.1P REPEAT.2P REPEAT.( KISHIMOTO PROJECT ).ATTACK.BALANCE.