6502-opcodes

Addressing modes

• Immediate: a value literal
• ZeroPage: argument is an 8-bit address to the zero page
• ZeroPageX: argument is an 8-bit address to the zero page, incremented by X without carry
• ZeroPageY: argument is an 8-bit address to the zero page, incremented by Y without carry
• Absolute: argument is an 16-bit address
• AbsoluteX: argument is an 16-bit address, incremented by X with carry
• AbsoluteY: argument is an 16-bit address, incremented by Y with carry
• Indirect: argument an address (A); the effective value is an address (B) stored at that address (A); used only by Jump
• IndirectX: argument is an 8-bit address; find a value at this address incremented by the value X
• IndirectY: argument is an 8-bit address; find a value at this address; increment the value by Y

TODO

• assembly doc w/ define support
• label region as assembly doc
• postfix operations to accumulator values
• loops