Commodore 64 Handbook page 74

STY
Store Index Y in Memory
Operation: Y M
NT Z C I 1 ) V
Addressing
Mode
Assembly Language
Form
OP
CODE
No.
Bytes
No.
Cycles
Z e ro Page
STY aa 84
2
3
Z e ro Page, X
STY aa,X 94
2 4
A b s o lu te
STY aaaa 8C
3
4
TAX
Transfer Accumulator to Index X
Operation: A - » X
N Z C I D V
/
J
--------
Addressing
Mode
Assem bly Language
Form
OP
CODE
No.
Bytes
No.
Cycles
Im p lie d T A X A A
1 2
TAY
Transfer Accumulator to Index Y
Operation: A -» Y
N Z C I D V
y / -------------
Addressing
Mode
Assem bly Language
Form
OP
CO DE
No.
Bytes
No.
Cycles
Im p lie d
T A Y A 8
1 2
72