BIT

Test Bits in Memory with Accumulator

Operation: A /\ M -> Z, M7 -> N, M6 -> V

N V - B D I Z C
M7M6. . . . / .

Bit 6 and 7 are transferred to the status register.
If the result of A /\ M is zero then Z = 1, otherwise Z=0.

Addressing Mode	Assembly Language Form	OP CODE	No. Bytes	No. Cycles
ZeroPage	BIT $FF	$24	2	3
Absolute	BIT $FFFF	$2C	3	4

For penalty cycles on the 65816, check the desired addressing mode.