ORA


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

ORA is a 65x instruction that performs a logical OR. In all addressing modes, ORA takes one extra cycle when the accumulator is 16 bits wide.