< 0: no inc-/decrement < 1 .. 8: increment by 1 .. 8 < -1 .. -8: decrement by 1 .. 8 < if flag M680X_IDX_POST_INC_DEC set it is post < inc-/decrement otherwise pre inc-/decrement +////< 8-bit flags (see above
See Implementation
< 0: no inc-/decrement < 1 .. 8: increment by 1 .. 8 < -1 .. -8: decrement by 1 .. 8 < if flag M680X_IDX_POST_INC_DEC set it is post < inc-/decrement otherwise pre inc-/decrement +////< 8-bit flags (see above