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DEY: Difference between revisions
From SnesLab
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* [[Carr]] page on DEY: https://archive.org/details/6502UsersManual/page/n271 | * [[Carr]] page on DEY: https://archive.org/details/6502UsersManual/page/n271 | ||
* [[Leventhal]] page on DEY: https://archive.org/details/6502-assembly-language-programming/page/n111 | * [[Leventhal]] page on DEY: https://archive.org/details/6502-assembly-language-programming/page/n111 | ||
* snes9x implementation of DEY: https://github.com/snes9xgit/snes9x/blob/master/cpuops.cpp#L1514 | |||
[[Category:ASM]] | [[Category:ASM]] | ||
[[Category:Inherited from 6502]] | [[Category:Inherited from 6502]] | ||
Revision as of 20:38, 17 May 2023
DEY is a 65x instruction that decrements the Y index register by one.
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Addressing Mode | Opcode | Length | Speed | ||||
| implied | 88 | 1 byte | 2 cycles | ||||
| Flags Clobbered | |||||||
|---|---|---|---|---|---|---|---|
| N | V | M | X | D | I | Z | C |
| . | . | . | . | . | . | ||
See Also
External Links
- Eyes & Lichty page on DEY: https://archive.org/details/0893037893ProgrammingThe65816/page/n479
- Labiak page on DEY: https://archive.org/details/Programming_the_65816/page/n149
- MCS6500 Manual page on DEY: https://archive.org/details/mos_microcomputers_programming_manual/page/n116
- Carr page on DEY: https://archive.org/details/6502UsersManual/page/n271
- Leventhal page on DEY: https://archive.org/details/6502-assembly-language-programming/page/n111
- snes9x implementation of DEY: https://github.com/snes9xgit/snes9x/blob/master/cpuops.cpp#L1514