CMP: Difference between revisions

Revision as of 05:02, 20 November 2023


Basic Info
Addressing Mode	Opcode	Length	Speed
Immediate	C9	2 bytes*	2 cycles*
Absolute	CD	3 bytes	4 cycles*
absolute long	CF	4 bytes	5 cycles*
direct page	C5	2 bytes	3 cycles*
direct page indirect	D2	2 bytes	5 cycles*
direct page indirect long	C7	2 bytes	6 cycles*
absolute indexed by X	DD	3 bytes	4 cycles*
absolute long indexed by X	DF	4 bytes	5 cycles*
absolute indexed by Y	D9	3 bytes	4 cycles*
direct page indexed by X	D5	2 bytes	4 cycles*
direct page indexed indirect by X	C1	2 bytes	6 cycles*
direct page indirect indexed by Y	D1	2 bytes	5 cycles*
direct page indirect long indexed by Y	D7	2 bytes	6 cycles*
stack relative	C3	2 bytes	4 cycles*
stack relative indirect indexed by Y	D3	2 bytes	7 cycles*


Flags Affected
N	V	M	X	D	I	Z	C
	.	.	.	.	.

CMP (Compare) is a 65x instruction that compares the value of the accumulator.

@@ Line 9: / Line 9: @@
 |[[Immediate]]
 |C9
-|2 bytes
+|2 bytes*
-|2 cycles
+|2 cycles*
 |+
 |[[Absolute]]
 |CD
 |3 bytes
-|4 cycles
+|4 cycles*
 |+
 |absolute long
 |CF
 |4 bytes
-|5 cycles
+|5 cycles*
 |+
 |direct page
 |C5
 |2 bytes
-|3 cycles
+|3 cycles*
 |+
 |direct page indirect
 |D2
 |2 bytes
-|5 cycles
+|5 cycles*
 |+
 |direct page indirect long
 |C7
 |2 bytes
-|6 cycles
+|6 cycles*
 |+
 |absolute indexed by X
 |DD
 |3 bytes
-|4 cycles
+|4 cycles*
 |+
 |absolute long indexed by X
 |DF
 |4 bytes
-|5 cycles
+|5 cycles*
 |+
 |absolute indexed by Y
 |D9
 |3 bytes
-|4 cycles
+|4 cycles*
 |+
 |direct page indexed by X
 |D5
 |2 bytes
-|4 cycles
+|4 cycles*
 |+
 |direct page indexed indirect by X
 |C1
 |2 bytes
-|6 cycles
+|6 cycles*
 |+
 |direct page indirect indexed by Y
 |D1
 |2 bytes
-|5 cycles
+|5 cycles*
 |+
 |direct page indirect long indexed by Y
 |D7
 |2 bytes
-|6 cycles
+|6 cycles*
 |+
 |stack relative
 |C3
 |2 bytes
-|4 cycles
+|4 cycles*
 |+
 |stack relative indirect indexed by Y
 |D3
 |2 bytes
-|7 cycles
+|7 cycles*
 |}