TYA


Basic Info
Addressing Mode	Opcode	Length	Speed
Implied (type 1)	98	1 byte	2 cycles


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

TYA is a 65x instruction that transfers the value of the Y index register to the accumulator.


Instruction Behavior
	8-bit accumulator (m=1)	16-bit accumulator (m=0)
8-bit index registers (x=1)	8 bits are transferred	8 bits are transferred to the low byte of accumulator and high byte of the accumulator is zeroed
16-bit index registers (x=0)	8 bits (the low byte of the index register) are transferred and the hidden byte of the B accumulator is unaffected	16 bits are transferred

TYA