A 6502 opcode that performs a bitwise exclusive OR. Pronounced like Eeyore.
  • Function: A ^ M => A
  • Updates flags: S . . . . . Z .
  • Opcode numbers:
    (d,x) $41
    dp    $45
    imm   $49
    abs   $4D
    (d),y $51
    d,x   $55
    a,y   $59
    a,x   $5D
    

Because 6502 is one of the only architectures that uses EOR as the official spelling, many assemblers support the synonym XOR.

See also: 6502 instructions | 6502 addressing modes