CPX

Compare Memory and Index X

Operation: X - M

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

Addressing Mode	Assembly Language Form	OP CODE	No. Bytes	No. Cycles
Immediate	CPX #$FF	$E0	2	2
ZeroPage	CPX $FF	$E4	2	3
Absolute	CPX $FFFF	$EC	3	4

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