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EOR: Difference between revisions

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=== External Links ===
=== External Links ===
* [[Eyes & Lichty]] page 454, on EOR: https://archive.org/details/0893037893ProgrammingThe65816/page/454
* [[Eyes & Lichty]], [https://archive.org/details/0893037893ProgrammingThe65816/page/454 page 454] on EOR
* [[Labiak]] page 141 on EOR: https://archive.org/details/Programming_the_65816/page/n151
* [[Labiak]] page 141 on EOR: https://archive.org/details/Programming_the_65816/page/n151
* [[MCS6500 Manual]] page 21 on EOR: https://archive.org/details/mos_microcomputers_programming_manual/page/n36
* [[MCS6500 Manual]] page 21 on EOR: https://archive.org/details/mos_microcomputers_programming_manual/page/n36

Revision as of 22:53, 6 August 2024

Basic Info
Addressing Mode Opcode Length Speed
Immediate 49 2/3 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 Affected
N V M X D I Z C
N . . . . . Z .

EOR is a 65x instruction that performs an exclusive or between its operand and the accumulator. The result is stored in the accumulator.

Syntax

EOR #const
EOR addr
EOR long
EOR dp
EOR (dp)
EOR [dp]
EOR addr, X
EOR long, X
EOR addr, Y
EOR dp, X
EOR (dp, X)
EOR (dp), Y
EOR [dp], Y
EOR sr, S
EOR (sr, S), Y
Cycle Penalties

See Also

External Links