// Loads (1c:02).w in b, increment 02, if 0 increment 1c?
400369: e260       ? e260 (b b)
40036a: f862       ? f862 (a b)
40036b: e782       #e1# b = r02
40036c: cbe3       ? cbe3 (b d)
40036d: 9002       beq 400370
40036e: fe40 0373  jmp 400373
400370: e79c       #e1# b = r1c
400371: eb60       ? eb60 (b b)
400372: e39c       #e1# r1c = b
400373: f863       ? f863 (a b)
400374: ff42       rts