Command Modes

These mostly follow the MOS Technology 6500 Microprocessor Family Programming Manual, except for the Accumulator mode. Accumulator instructions are written and interpreted identically to Implied mode instructions.

• Implied: RTS

• Accumulator: LSR

• Immediate: LDA #$06

• Zero Page: LDA $7C

• Zero Page, X: LDA $7C,X

• Zero Page, Y: LDA $7C,Y

• Absolute: LDA $D020

• Absolute, X: LDA $D000,X

• Absolute, Y: LDA $D000,Y

• (Zero Page Indirect, X): LDA ($80, X)

• (Zero Page Indirect), Y: LDA ($80), Y

• (Absolute Indirect): JMP ($A000)

• Relative: BNE loop

• (Absolute Indirect, X): JMP ($A000, X) — Only available with 65C02 extensions

• (Zero Page Indirect): LDX ($80) — Only available with 65C02 extensions