An insane video hack, would never ever think of something like that.

Lol, we actually won the oldskool compo at Deadline with this. Found out only once it was too late that the boys are screwing around with the vblank irq, which affects the timing of the music, but oh well... Own sound engine with 3 modes: standard shift register sound, software bass, software bass with crude duty control. Also sorry, no greetz.