{{Admon/tip|Addressing Modes and Registers are essential!|Take the time to understand the [[6502 Addressing Modes|6502 addressing modes ]] and [[6502#Registers|registers]]. This is essential background infromation for understanding the 6502 instructions.}} 

There are 13 thirteen [[6502 Addressing Modes]]. All of these instructions work with at least one addressing mode, and many work with several addressing modes. See the [[#Resources|Resources]] section for Opcode tables that define which instructions work with which addressing modes.