Instructions (6502)

In comparison with modern-day processors, the 6502 microprocessor supported few instructions. This makes it easy to learn, but powerful enough to make your own operating system or homebrew programming language.

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Math Instructions

Add / Subtract

Shift / Rotate

Increment / Decrement

Load and Store Instructions

Load

Store

  • STA - Store the accumulator.
  • STX - Store X
  • STY - Store Y

Logical Instructions

Jump, Branching, Subroutine Instructions

Jump

Branching

Subroutine

Compare / Test Bits

Compare

Test Bits

Assembly

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