STY STY Store index Y in memory STY Operation: Y -> M N V - B D I Z C . . . . . . . . +----------------+-----------------------+---------+---------+----------+ | Addressing Mode| Assembly Language Form| OP CODE |No. Bytes|No. Cycles| +----------------+-----------------------+---------+---------+----------+ | Zero Page | STY $FF | $84 | 2 | 3 | | Zero Page,X | STY $FF,X | $94 | 2 | 4 | | Absolute | STY $FFFF | $8C | 3 | 4 | +----------------+-----------------------+---------+---------+----------+