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STZ: Difference between revisions
From SnesLab
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* [[STX]] | * [[STX]] | ||
* [[STY]] | * [[STY]] | ||
=== External Links === | |||
* [[Eyes & Lichty]] page on STZ: https://archive.org/details/0893037893ProgrammingThe65816/page/n533 | |||
[[Category:ASM]] | [[Category:ASM]] | ||
[[Category:65c02 additions]] | [[Category:65c02 additions]] | ||
Revision as of 22:58, 15 May 2023
STZ (Store Zero) is a 65c816 instruction that zeros out memory.
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | Speed | ||||
| absolute | 9C | 3 bytes | 4 cycles | ||||
| direct page | 64 | 2 bytes | 3 cycles | ||||
| absolute indexed X | 9E | 3 bytes | 5 cycles | ||||
| direct page indexed X | 74 | 2 bytes | 4 cycles | ||||
| Flags Clobbered | ||||||||
|---|---|---|---|---|---|---|---|---|
| N | V | M | X | D | I | Z | C | |
| . | . | . | . | . | . | . | . | |