SBC: Difference between revisions

Revision as of 02:42, 20 November 2023


Basic Info
Addressing Mode	Opcode	Length	Speed
Immediate	E9	2 bytes	2 cycles*
absolute	ED	3 bytes	4 cycles*
absolute long	EF	4 bytes	5 cycles*
direct page	E5	2 bytes	3 cycles*
direct page indirect	F2	2 bytes	5 cycles*
direct page indirect long	E7	2 bytes	6 cycles*
absolute indexed by X	FD	3 bytes	4 cycles*
absolute long indexed by X	FF	4 bytes	5 cycles*
absolute indexed by Y	F9	3 bytes	4 cycles*
direct page indexed by X	F5	2 bytes	4 cycles*
direct page indirect indexed by X	E1	2 bytes	6 cycles*
direct page indirect indexed by Y	F1	2 bytes	5 cycles*
direct page indirect long indexed by Y	F7	2 bytes	6 cycles*
stack relative	E3	2 bytes	4 cycles*
stack relative indirect indexed by Y	F3	2 bytes	7 cycles*


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

SBC (Subtract with Carry/Borrow) is 65x instruction that performs a subtraction.

@@ Line 10: / Line 10: @@
 |E9
 |2 bytes
-|2 cycles
+|2 cycles*
 |+
 |absolute
 |ED
 |3 bytes
-|4 cycles
+|4 cycles*
 |+
 |absolute long
 |EF
 |4 bytes
-|5 cycles
+|5 cycles*
 |+
 |direct page
 |E5
 |2 bytes
-|3 cycles
+|3 cycles*
 |+
 |direct page indirect
 |F2
 |2 bytes
-|5 cycles
+|5 cycles*
 |+
 |direct page indirect long
 |E7
 |2 bytes
-|6 cycles
+|6 cycles*
 |+
 |absolute indexed by X
 |FD
 |3 bytes
-|4 cycles
+|4 cycles*
 |+
 |absolute long indexed by X
 |FF
 |4 bytes
-|5 cycles
+|5 cycles*
 |+
 |absolute indexed by Y
 |F9
 |3 bytes
-|4 cycles
+|4 cycles*
 |+
 |direct page indexed by X
 |F5
 |2 bytes
-|4 cycles
+|4 cycles*
 |+
 |direct page indirect indexed by X
 |E1
 |2 bytes
-|6 cycles
+|6 cycles*
 |+
 |direct page indirect indexed by Y
 |F1
 |2 bytes
-|5 cycles
+|5 cycles*
 |+
 |direct page indirect long indexed by Y
 |F7
 |2 bytes
-|6 cycles
+|6 cycles*
 |+
 |stack relative
 |E3
 |2 bytes
-|4 cycles
+|4 cycles*
 |+
 |stack relative indirect indexed by Y
 |F3
 |2 bytes
-|7 cycles
+|7 cycles*
 |}