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6502
,→Instruction Set
== Instruction Set ==
The 6502 instruction set consist of a number of single-byte [[OpCode|opcodes]], each of which is followed by 0, 1, or 2 bytes of arguments. Each opcode corresponded to an [[Instruction|instruction]], which consists of an [[Operation|operation]] and an [[6502 Addressing ModeModes|addressing mode]]. 6502 [[Assembly Language]] uses 3-letter menomics to specify the operation, and argument syntax to specify the addressing mode. For example:
LDA #$05 ; load the accumulator with the number 5
