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CPY: Difference between revisions
From SnesLab
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=== See Also === | === See Also === | ||
* [[CPX]] | * [[CPX]] | ||
=== External Links === | |||
* [[Eyes & Lichty]] page on CPY: https://archive.org/details/0893037893ProgrammingThe65816/page/n576 | |||
[[Category:ASM]] | [[Category:ASM]] | ||
[[Category:Group Three Instructions]] | [[Category:Group Three Instructions]] | ||
[[Category:Inherited from 6502]] | [[Category:Inherited from 6502]] | ||
Revision as of 22:32, 15 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 | |
| . | . | . | . | . | ||||