ORA: Difference between revisions

Revision as of 18:27, 2 May 2023

ORA is a 65x instruction that performs a logical OR.


Basic Info
Addressing Mode	Opcode	Length	Speed
immediate	09	2 bytes	2 cycles
absolute	0D	3 bytes	4 cycles
absolute long	0F	4 bytes	5 cycles
direct page	05	2 bytes	3 cycles
direct page indirect	12	2 bytes	5 cycles
direct page indirect long	07	2 bytes	6 cycles
absolute indexed by X	1D	3 bytes	4 cycles
absolute long indexed by X	1F	4 bytes	5 cycles
absolute indexed by Y	19	3 bytes	4 cycles
direct page indexed by X	15	2 bytes	4 cycles
direct page indexed indirect by X	01	2 bytes	6 cycles
direct page indirect indexed by Y	11	2 bytes	5 cycles
direct page indirect long indexed by Y	17	2 bytes	6 cycles
stack relative	03	2 bytes	4 cycles
stack relative indirect indexed by Y	13	2 bytes	7 cycles


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

@@ Line 1: / Line 1: @@
 '''ORA''' is a 65x instruction that performs a logical OR.
+{| class="wikitable" style="float:right;clear:right;width:30%"
+!colspan="8"|Basic Info
+|+
+|'''Addressing Mode'''
+|'''Opcode'''
+|'''Length'''
+|'''Speed'''
+|+
+|immediate
+|09
+|2 bytes
+|2 cycles
+|+
+|absolute
+|0D
+|3 bytes
+|4 cycles
+|+
+|absolute long
+|0F
+|4 bytes
+|5 cycles
+|+
+|direct page
+|05
+|2 bytes
+|3 cycles
+|+
+|direct page indirect
+|12
+|2 bytes
+|5 cycles
+|+
+|direct page indirect long
+|07
+|2 bytes
+|6 cycles
+|+
+|absolute indexed by X
+|1D
+|3 bytes
+|4 cycles
+|+
+|absolute long indexed by X
+|1F
+|4 bytes
+|5 cycles
+|+
+|absolute indexed by Y
+|19
+|3 bytes
+|4 cycles
+|+
+|direct page indexed by X
+|15
+|2 bytes
+|4 cycles
+|+
+|direct page indexed indirect by X
+|01
+|2 bytes
+|6 cycles
+|+
+|direct page indirect indexed by Y
+|11
+|2 bytes
+|5 cycles
+|+
+|direct page indirect long indexed by Y
+|17
+|2 bytes
+|6 cycles
+|+
+|stack relative
+|03
+|2 bytes
+|4 cycles
+|+
+|stack relative indirect indexed by Y
+|13
+|2 bytes
+|7 cycles
+|}
 {| class="wikitable" style="float:right;clear:right;width:30%"