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CPY: Difference between revisions
From SnesLab
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'''CPY''' (Compare Y) is a 65x instruction that compares the value of the [[Y index register]]. | '''CPY''' (Compare Y) is a 65x instruction that compares the value of the [[Y index register]]. | ||
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!colspan="8"|Basic Info | |||
|+ | |||
|'''Addressing Mode''' | |||
|'''Opcode''' | |||
|'''Length''' | |||
|'''Speed''' | |||
|+ | |||
|immediate | |||
|C0 | |||
|2 bytes | |||
|2 cycles | |||
|+ | |||
|absolute | |||
|CC | |||
|3 bytes | |||
|4 cycles | |||
|+ | |||
|direct page | |||
|C4 | |||
|2 bytes | |||
|3 cycles | |||
|} | |||
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Revision as of 17:35, 1 May 2023
CPY (Compare Y) is a 65x instruction that compares the value of the Y index register.
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | Speed | ||||
| immediate | C0 | 2 bytes | 2 cycles | ||||
| absolute | CC | 3 bytes | 4 cycles | ||||
| direct page | C4 | 2 bytes | 3 cycles | ||||
| Flags Clobbered | ||||||||
|---|---|---|---|---|---|---|---|---|
| N | V | M | X | D | I | Z | C | |
| . | . | . | . | . | ||||