Is this the common-ish case where there are 2 bits for each axis, one saying move/didn't move and one indicating the direction of movement?

ETA: if so, the best example is probably https://github.com/mamedev/mame/blob/master/src/mame/drivers/mac128.cpp#L927

Last edited by R. Belmont; 09/30/21 03:01 PM.