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EOR: Difference between revisions

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* [[Carr]] page on EOR: https://archive.org/details/6502UsersManual/page/n272
* [[Carr]] page on EOR: https://archive.org/details/6502UsersManual/page/n272
* [[Leventhal]] page on EOR: https://archive.org/details/6502-assembly-language-programming/page/n112
* [[Leventhal]] page on EOR: https://archive.org/details/6502-assembly-language-programming/page/n112
* snes9x implementation of EOR: https://github.com/snes9xgit/snes9x/blob/master/cpuops.cpp#L533


[[Category:ASM]]
[[Category:ASM]]
[[Category:Group One Instructions]]
[[Category:Group One Instructions]]
[[Category:Inherited from 6502]]
[[Category:Inherited from 6502]]

Revision as of 20:42, 17 May 2023

EOR is a 65x instruction that performs an exclusive or.

Basic Info
Addressing Mode Opcode Length Speed
immediate 49 2 bytes 2 cycles
absolute 4D 3 bytes 4 cycles
absolute long 4F 4 bytes 5 cycles
direct page 45 2 bytes 3 cycles
direct page indirect 52 2 bytes 5 cycles
direct page indirect long 47 2 bytes 6 cycles
absolute indexed by X 5D 3 bytes 4 cycles
absolute long indexed by X 5F 4 bytes 5 cycles
absolute indexed by Y 59 3 bytes 4 cycles
direct page indexed by X 55 2 bytes 4 cycles
direct page indexed indirect by X 41 2 bytes 6 cycles
direct page indirect indexed by Y 51 2 bytes 5 cycles
direct page indirect long indexed by Y 57 2 bytes 6 cycles
stack relative 43 2 bytes 4 cycles
stack relative indirect indexed by Y 53 2 bytes 7 cycles
Flags Clobbered
N V M X D I Z C
. . . . . .

See Also

External Links