6502 instruction set in JSON

6502_instructions.json

[
   {
      "bytes" : "2",
      "description" : "Add with Carry",
      "name" : "ADC",
      "opcode" : "$69",
      "mode" : "Immediate"
   },
   {
      "opcode" : "$65",
      "name" : "ADC",
      "bytes" : "2",
      "description" : "Add with Carry",
      "mode" : "ZeroPage"
   },
   {
      "description" : "Add with Carry",
      "bytes" : "2",
      "opcode" : "$75",
      "name" : "ADC",
      "mode" : "ZeroPage,X"
   },
   {
      "name" : "ADC",
      "opcode" : "$6D",
      "bytes" : "3",
      "description" : "Add with Carry",
      "mode" : "Absolute"
   },
   {
      "mode" : "Absolute,X",
      "name" : "ADC",
      "opcode" : "$7D",
      "bytes" : "3",
      "description" : "Add with Carry"
   },
   {
      "mode" : "Absolute,Y",
      "name" : "ADC",
      "opcode" : "$79",
      "description" : "Add with Carry",
      "bytes" : "3"
   },
   {
      "mode" : "(Indirect,X)",
      "description" : "Add with Carry",
      "bytes" : "2",
      "opcode" : "$61",
      "name" : "ADC"
   },
   {
      "mode" : "(Indirect),Y",
      "bytes" : "2",
      "description" : "Add with Carry",
      "name" : "ADC",
      "opcode" : "$71"
   },
   {
      "bytes" : "2",
      "description" : "Logical AND",
      "name" : "AND",
      "opcode" : "$29",
      "mode" : "Immediate"
   },
   {
      "mode" : "ZeroPage",
      "name" : "AND",
      "opcode" : "$25",
      "bytes" : "2",
      "description" : "Logical AND"
   },
   {
      "bytes" : "2",
      "description" : "Logical AND",
      "name" : "AND",
      "opcode" : "$35",
      "mode" : "ZeroPage,X"
   },
   {
      "mode" : "Absolute",
      "opcode" : "$2D",
      "name" : "AND",
      "description" : "Logical AND",
      "bytes" : "3"
   },
   {
      "description" : "Logical AND",
      "bytes" : "3",
      "name" : "AND",
      "opcode" : "$3D",
      "mode" : "Absolute,X"
   },
   {
      "mode" : "Absolute,Y",
      "bytes" : "3",
      "description" : "Logical AND",
      "opcode" : "$39",
      "name" : "AND"
   },
   {
      "description" : "Logical AND",
      "bytes" : "2",
      "opcode" : "$21",
      "name" : "AND",
      "mode" : "(Indirect,X)"
   },
   {
      "name" : "AND",
      "opcode" : "$31",
      "description" : "Logical AND",
      "bytes" : "2",
      "mode" : "(Indirect),Y"
   },
   {
      "description" : "Arithmetic Shift Left",
      "bytes" : "1",
      "opcode" : "$0A",
      "name" : "ASL",
      "mode" : "Accumulator"
   },
   {
      "opcode" : "$06",
      "name" : "ASL",
      "bytes" : "2",
      "description" : "Arithmetic Shift Left",
      "mode" : "ZeroPage"
   },
   {
      "description" : "Arithmetic Shift Left",
      "bytes" : "2",
      "name" : "ASL",
      "opcode" : "$16",
      "mode" : "ZeroPage,X"
   },
   {
      "mode" : "Absolute",
      "description" : "Arithmetic Shift Left",
      "bytes" : "3",
      "name" : "ASL",
      "opcode" : "$0E"
   },
   {
      "mode" : "Absolute,X",
      "description" : "Arithmetic Shift Left",
      "bytes" : "3",
      "name" : "ASL",
      "opcode" : "$1E"
   },
   {
      "mode" : "Relative",
      "bytes" : "2",
      "description" : "Branch if Carry Clear",
      "opcode" : "$90",
      "name" : "BCC"
   },
   {
      "mode" : "Relative",
      "bytes" : "2",
      "description" : "Branch if Carry Set",
      "name" : "BCS",
      "opcode" : "$B0"
   },
   {
      "bytes" : "2",
      "description" : "Branch if Equal",
      "name" : "BEQ",
      "opcode" : "$F0",
      "mode" : "Relative"
   },
   {
      "opcode" : "$24",
      "name" : "BIT",
      "bytes" : "2",
      "description" : "Bit Test",
      "mode" : "ZeroPage"
   },
   {
      "mode" : "Absolute",
      "description" : "Bit Test",
      "bytes" : "3",
      "name" : "BIT",
      "opcode" : "$2C"
   },
   {
      "mode" : "Relative",
      "description" : "Branch if Minus",
      "bytes" : "2",
      "name" : "BMI",
      "opcode" : "$30"
   },
   {
      "opcode" : "$D0",
      "name" : "BNE",
      "description" : "Branch if Not Equal",
      "bytes" : "2",
      "mode" : "Relative"
   },
   {
      "mode" : "Relative",
      "opcode" : "$10",
      "name" : "BPL",
      "description" : "Branch if Positive",
      "bytes" : "2"
   },
   {
      "name" : "BRK",
      "opcode" : "$00",
      "description" : "Force Interrupt",
      "bytes" : "1",
      "mode" : "Implied"
   },
   {
      "mode" : "Relative",
      "description" : "Branch if Overflow Clear",
      "bytes" : "2",
      "opcode" : "$50",
      "name" : "BVC"
   },
   {
      "mode" : "Relative",
      "description" : "Branch if Overflow Set",
      "bytes" : "2",
      "name" : "BVS",
      "opcode" : "$70"
   },
   {
      "mode" : "Implied",
      "opcode" : "$18",
      "name" : "CLC",
      "bytes" : "1",
      "description" : "Clear Carry Flag"
   },
   {
      "bytes" : "1",
      "description" : "Clear Decimal Mode",
      "name" : "CLD",
      "opcode" : "$D8",
      "mode" : "Implied"
   },
   {
      "mode" : "Implied",
      "bytes" : "1",
      "description" : "Clear Interrupt Disable",
      "opcode" : "$58",
      "name" : "CLI"
   },
   {
      "mode" : "Implied",
      "description" : "Clear Overflow Flag",
      "bytes" : "1",
      "opcode" : "$B8",
      "name" : "CLV"
   },
   {
      "opcode" : "$C9",
      "name" : "CMP",
      "bytes" : "2",
      "description" : "Compare",
      "mode" : "Immediate"
   },
   {
      "mode" : "ZeroPage",
      "bytes" : "2",
      "description" : "Compare",
      "opcode" : "$C5",
      "name" : "CMP"
   },
   {
      "opcode" : "$D5",
      "name" : "CMP",
      "bytes" : "2",
      "description" : "Compare",
      "mode" : "ZeroPage,X"
   },
   {
      "mode" : "Absolute",
      "opcode" : "$CD",
      "name" : "CMP",
      "bytes" : "3",
      "description" : "Compare"
   },
   {
      "name" : "CMP",
      "opcode" : "$DD",
      "bytes" : "3",
      "description" : "Compare",
      "mode" : "Absolute,X"
   },
   {
      "opcode" : "$D9",
      "name" : "CMP",
      "bytes" : "3",
      "description" : "Compare",
      "mode" : "Absolute,Y"
   },
   {
      "name" : "CMP",
      "opcode" : "$C1",
      "bytes" : "2",
      "description" : "Compare",
      "mode" : "(Indirect,X)"
   },
   {
      "name" : "CMP",
      "opcode" : "$D1",
      "bytes" : "2",
      "description" : "Compare",
      "mode" : "(Indirect),Y"
   },
   {
      "mode" : "Immediate",
      "name" : "CPX",
      "opcode" : "$E0",
      "description" : "Compare X Register",
      "bytes" : "2"
   },
   {
      "mode" : "ZeroPage",
      "bytes" : "2",
      "description" : "Compare X Register",
      "opcode" : "$E4",
      "name" : "CPX"
   },
   {
      "mode" : "Absolute",
      "description" : "Compare X Register",
      "bytes" : "3",
      "name" : "CPX",
      "opcode" : "$EC"
   },
   {
      "mode" : "Immediate",
      "name" : "CPY",
      "opcode" : "$C0",
      "bytes" : "2",
      "description" : "Compare Y Register"
   },
   {
      "opcode" : "$C4",
      "name" : "CPY",
      "bytes" : "2",
      "description" : "Compare Y Register",
      "mode" : "ZeroPage"
   },
   {
      "bytes" : "3",
      "description" : "Compare Y Register",
      "name" : "CPY",
      "opcode" : "$CC",
      "mode" : "Absolute"
   },
   {
      "bytes" : "2",
      "description" : "Decrement Memory",
      "name" : "DEC",
      "opcode" : "$C6",
      "mode" : "ZeroPage"
   },
   {
      "opcode" : "$D6",
      "name" : "DEC",
      "description" : "Decrement Memory",
      "bytes" : "2",
      "mode" : "ZeroPage,X"
   },
   {
      "bytes" : "3",
      "description" : "Decrement Memory",
      "name" : "DEC",
      "opcode" : "$CE",
      "mode" : "Absolute"
   },
   {
      "name" : "DEC",
      "opcode" : "$DE",
      "description" : "Decrement Memory",
      "bytes" : "3",
      "mode" : "Absolute,X"
   },
   {
      "description" : "Decrement X Register",
      "bytes" : "1",
      "name" : "DEX",
      "opcode" : "$CA",
      "mode" : "Implied"
   },
   {
      "mode" : "Implied",
      "bytes" : "1",
      "description" : "Decrement Y Register",
      "opcode" : "$88",
      "name" : "DEY"
   },
   {
      "opcode" : "$49",
      "name" : "EOR",
      "description" : "Exclusive OR",
      "bytes" : "2",
      "mode" : "Immediate"
   },
   {
      "opcode" : "$45",
      "name" : "EOR",
      "bytes" : "2",
      "description" : "Exclusive OR",
      "mode" : "ZeroPage"
   },
   {
      "mode" : "ZeroPage,X",
      "bytes" : "2",
      "description" : "Exclusive OR",
      "name" : "EOR",
      "opcode" : "$55"
   },
   {
      "mode" : "Absolute",
      "name" : "EOR",
      "opcode" : "$4D",
      "bytes" : "3",
      "description" : "Exclusive OR"
   },
   {
      "description" : "Exclusive OR",
      "bytes" : "3",
      "name" : "EOR",
      "opcode" : "$5D",
      "mode" : "Absolute,X"
   },
   {
      "mode" : "Absolute,Y",
      "name" : "EOR",
      "opcode" : "$59",
      "description" : "Exclusive OR",
      "bytes" : "3"
   },
   {
      "mode" : "(Indirect,X)",
      "description" : "Exclusive OR",
      "bytes" : "2",
      "name" : "EOR",
      "opcode" : "$41"
   },
   {
      "mode" : "(Indirect),Y",
      "bytes" : "2",
      "description" : "Exclusive OR",
      "opcode" : "$51",
      "name" : "EOR"
   },
   {
      "bytes" : "2",
      "description" : "Increment Memory",
      "name" : "INC",
      "opcode" : "$E6",
      "mode" : "ZeroPage"
   },
   {
      "opcode" : "$F6",
      "name" : "INC",
      "description" : "Increment Memory",
      "bytes" : "2",
      "mode" : "ZeroPage,X"
   },
   {
      "mode" : "Absolute",
      "bytes" : "3",
      "description" : "Increment Memory",
      "opcode" : "$EE",
      "name" : "INC"
   },
   {
      "opcode" : "$FE",
      "name" : "INC",
      "bytes" : "3",
      "description" : "Increment Memory",
      "mode" : "Absolute,X"
   },
   {
      "mode" : "Implied",
      "opcode" : "$E8",
      "name" : "INX",
      "description" : "Increment X Register",
      "bytes" : "1"
   },
   {
      "description" : "Increment Y Register",
      "bytes" : "1",
      "name" : "INY",
      "opcode" : "$C8",
      "mode" : "Implied"
   },
   {
      "mode" : "Absolute",
      "description" : "Jump",
      "bytes" : "3",
      "name" : "JMP",
      "opcode" : "$4C"
   },
   {
      "mode" : "Indirect ",
      "opcode" : "$6C",
      "name" : "JMP",
      "description" : "Jump",
      "bytes" : "3"
   },
   {
      "mode" : "Absolute",
      "name" : "JSR",
      "opcode" : "$20",
      "description" : "Jump to Subroutine",
      "bytes" : "3"
   },
   {
      "description" : "Load Accumulator",
      "bytes" : "2",
      "name" : "LDA",
      "opcode" : "$A9",
      "mode" : "Immediate"
   },
   {
      "mode" : "ZeroPage",
      "name" : "LDA",
      "opcode" : "$A5",
      "bytes" : "2",
      "description" : "Load Accumulator"
   },
   {
      "opcode" : "$B5",
      "name" : "LDA",
      "description" : "Load Accumulator",
      "bytes" : "2",
      "mode" : "ZeroPage,X"
   },
   {
      "name" : "LDA",
      "opcode" : "$AD",
      "bytes" : "3",
      "description" : "Load Accumulator",
      "mode" : "Absolute"
   },
   {
      "mode" : "Absolute,X",
      "bytes" : "3",
      "description" : "Load Accumulator",
      "opcode" : "$BD",
      "name" : "LDA"
   },
   {
      "mode" : "Absolute,Y",
      "name" : "LDA",
      "opcode" : "$B9",
      "bytes" : "3",
      "description" : "Load Accumulator"
   },
   {
      "opcode" : "$A1",
      "name" : "LDA",
      "description" : "Load Accumulator",
      "bytes" : "2",
      "mode" : "(Indirect,X)"
   },
   {
      "mode" : "(Indirect),Y",
      "name" : "LDA",
      "opcode" : "$B1",
      "description" : "Load Accumulator",
      "bytes" : "2"
   },
   {
      "description" : "Load X Register",
      "bytes" : "2",
      "name" : "LDX",
      "opcode" : "$A2",
      "mode" : "Immediate"
   },
   {
      "description" : "Load X Register",
      "bytes" : "2",
      "name" : "LDX",
      "opcode" : "$A6",
      "mode" : "ZeroPage"
   },
   {
      "description" : "Load X Register",
      "bytes" : "2",
      "name" : "LDX",
      "opcode" : "$B6",
      "mode" : "ZeroPage,Y"
   },
   {
      "mode" : "Absolute",
      "opcode" : "$AE",
      "name" : "LDX",
      "bytes" : "3",
      "description" : "Load X Register"
   },
   {
      "bytes" : "3",
      "description" : "Load X Register",
      "name" : "LDX",
      "opcode" : "$BE",
      "mode" : "Absolute,Y"
   },
   {
      "mode" : "Immediate",
      "opcode" : "$A0",
      "name" : "LDY",
      "description" : "Load Y Register",
      "bytes" : "2"
   },
   {
      "name" : "LDY",
      "opcode" : "$A4",
      "bytes" : "2",
      "description" : "Load Y Register",
      "mode" : "ZeroPage"
   },
   {
      "description" : "Load Y Register",
      "bytes" : "2",
      "name" : "LDY",
      "opcode" : "$B4",
      "mode" : "ZeroPage,X"
   },
   {
      "name" : "LDY",
      "opcode" : "$AC",
      "description" : "Load Y Register",
      "bytes" : "3",
      "mode" : "Absolute"
   },
   {
      "bytes" : "3",
      "description" : "Load Y Register",
      "name" : "LDY",
      "opcode" : "$BC",
      "mode" : "Absolute,X"
   },
   {
      "mode" : "Accumulator",
      "description" : "Logical Shift Right",
      "bytes" : "1",
      "opcode" : "$4A",
      "name" : "LSR"
   },
   {
      "mode" : "ZeroPage",
      "name" : "LSR",
      "opcode" : "$46",
      "description" : "Logical Shift Right",
      "bytes" : "2"
   },
   {
      "mode" : "ZeroPage,X",
      "description" : "Logical Shift Right",
      "bytes" : "2",
      "name" : "LSR",
      "opcode" : "$56"
   },
   {
      "mode" : "Absolute",
      "opcode" : "$4E",
      "name" : "LSR",
      "description" : "Logical Shift Right",
      "bytes" : "3"
   },
   {
      "mode" : "Absolute,X",
      "name" : "LSR",
      "opcode" : "$5E",
      "description" : "Logical Shift Right",
      "bytes" : "3"
   },
   {
      "mode" : "Implied",
      "description" : "No Operation",
      "bytes" : "1",
      "opcode" : "$EA",
      "name" : "NOP"
   },
   {
      "name" : "ORA",
      "opcode" : "$09",
      "bytes" : "2",
      "description" : "Logical Inclusive OR",
      "mode" : "Immediate"
   },
   {
      "opcode" : "$05",
      "name" : "ORA",
      "description" : "Logical Inclusive OR",
      "bytes" : "2",
      "mode" : "ZeroPage"
   },
   {
      "mode" : "ZeroPage,X",
      "opcode" : "$15",
      "name" : "ORA",
      "description" : "Logical Inclusive OR",
      "bytes" : "2"
   },
   {
      "opcode" : "$0D",
      "name" : "ORA",
      "bytes" : "3",
      "description" : "Logical Inclusive OR",
      "mode" : "Absolute"
   },
   {
      "mode" : "Absolute,X",
      "description" : "Logical Inclusive OR",
      "bytes" : "3",
      "name" : "ORA",
      "opcode" : "$1D"
   },
   {
      "mode" : "Absolute,Y",
      "description" : "Logical Inclusive OR",
      "bytes" : "3",
      "name" : "ORA",
      "opcode" : "$19"
   },
   {
      "mode" : "(Indirect,X)",
      "bytes" : "2",
      "description" : "Logical Inclusive OR",
      "name" : "ORA",
      "opcode" : "$01"
   },
   {
      "mode" : "(Indirect),Y",
      "description" : "Logical Inclusive OR",
      "bytes" : "2",
      "opcode" : "$11",
      "name" : "ORA"
   },
   {
      "opcode" : "$48",
      "name" : "PHA",
      "bytes" : "1",
      "description" : "Push Accumulator",
      "mode" : "Implied"
   },
   {
      "mode" : "Implied",
      "opcode" : "$08",
      "name" : "PHP",
      "description" : "Push Processor Status",
      "bytes" : "1"
   },
   {
      "mode" : "Implied",
      "bytes" : "1",
      "description" : "Pull Accumulator",
      "name" : "PLA",
      "opcode" : "$68"
   },
   {
      "description" : "Pull Processor Status",
      "bytes" : "1",
      "opcode" : "$28",
      "name" : "PLP",
      "mode" : "Implied"
   },
   {
      "mode" : "Accumulator",
      "name" : "ROL",
      "opcode" : "$2A",
      "bytes" : "1",
      "description" : "Rotate Left"
   },
   {
      "mode" : "ZeroPage",
      "description" : "Rotate Left",
      "bytes" : "2",
      "opcode" : "$26",
      "name" : "ROL"
   },
   {
      "bytes" : "2",
      "description" : "Rotate Left",
      "opcode" : "$36",
      "name" : "ROL",
      "mode" : "ZeroPage,X"
   },
   {
      "bytes" : "3",
      "description" : "Rotate Left",
      "name" : "ROL",
      "opcode" : "$2E",
      "mode" : "Absolute"
   },
   {
      "name" : "ROL",
      "opcode" : "$3E",
      "bytes" : "3",
      "description" : "Rotate Left",
      "mode" : "Absolute,X"
   },
   {
      "name" : "ROR",
      "opcode" : "$6A",
      "description" : "Rotate Right",
      "bytes" : "1",
      "mode" : "Accumulator"
   },
   {
      "bytes" : "2",
      "description" : "Rotate Right",
      "opcode" : "$66",
      "name" : "ROR",
      "mode" : "ZeroPage"
   },
   {
      "mode" : "ZeroPage,X",
      "opcode" : "$76",
      "name" : "ROR",
      "bytes" : "2",
      "description" : "Rotate Right"
   },
   {
      "mode" : "Absolute",
      "bytes" : "3",
      "description" : "Rotate Right",
      "name" : "ROR",
      "opcode" : "$6E"
   },
   {
      "mode" : "Absolute,X",
      "description" : "Rotate Right",
      "bytes" : "3",
      "name" : "ROR",
      "opcode" : "$7E"
   },
   {
      "mode" : "Implied",
      "bytes" : "1",
      "description" : "Return from Interrupt",
      "opcode" : "$40",
      "name" : "RTI"
   },
   {
      "mode" : "Implied",
      "name" : "RTS",
      "opcode" : "$60",
      "description" : "Return from Subroutine",
      "bytes" : "1"
   },
   {
      "bytes" : "2",
      "description" : "Subtract with Carry",
      "opcode" : "$E9",
      "name" : "SBC",
      "mode" : "Immediate"
   },
   {
      "name" : "SBC",
      "opcode" : "$E5",
      "bytes" : "2",
      "description" : "Subtract with Carry",
      "mode" : "ZeroPage"
   },
   {
      "description" : "Subtract with Carry",
      "bytes" : "2",
      "name" : "SBC",
      "opcode" : "$F5",
      "mode" : "ZeroPage,X"
   },
   {
      "name" : "SBC",
      "opcode" : "$ED",
      "description" : "Subtract with Carry",
      "bytes" : "3",
      "mode" : "Absolute"
   },
   {
      "opcode" : "$FD",
      "name" : "SBC",
      "description" : "Subtract with Carry",
      "bytes" : "3",
      "mode" : "Absolute,X"
   },
   {
      "mode" : "Absolute,Y",
      "opcode" : "$F9",
      "name" : "SBC",
      "bytes" : "3",
      "description" : "Subtract with Carry"
   },
   {
      "mode" : "(Indirect,X)",
      "opcode" : "$E1",
      "name" : "SBC",
      "description" : "Subtract with Carry",
      "bytes" : "2"
   },
   {
      "bytes" : "2",
      "description" : "Subtract with Carry",
      "name" : "SBC",
      "opcode" : "$F1",
      "mode" : "(Indirect),Y"
   },
   {
      "description" : "Set Carry Flag",
      "bytes" : "1",
      "name" : "SEC",
      "opcode" : "$38",
      "mode" : "Implied"
   },
   {
      "name" : "SED",
      "opcode" : "$F8",
      "description" : "Set Decimal Flag",
      "bytes" : "1",
      "mode" : "Implied"
   },
   {
      "mode" : "Implied",
      "opcode" : "$78",
      "name" : "SEI",
      "bytes" : "1",
      "description" : "Set Interrupt Disable"
   },
   {
      "description" : "Store Accumulator",
      "bytes" : "2",
      "name" : "STA",
      "opcode" : "$85",
      "mode" : "ZeroPage"
   },
   {
      "mode" : "ZeroPage,X",
      "bytes" : "2",
      "description" : "Store Accumulator",
      "name" : "STA",
      "opcode" : "$95"
   },
   {
      "mode" : "Absolute",
      "opcode" : "$8D",
      "name" : "STA",
      "description" : "Store Accumulator",
      "bytes" : "3"
   },
   {
      "bytes" : "3",
      "description" : "Store Accumulator",
      "opcode" : "$9D",
      "name" : "STA",
      "mode" : "Absolute,X"
   },
   {
      "bytes" : "3",
      "description" : "Store Accumulator",
      "name" : "STA",
      "opcode" : "$99",
      "mode" : "Absolute,Y"
   },
   {
      "mode" : "(Indirect,X)",
      "description" : "Store Accumulator",
      "bytes" : "2",
      "name" : "STA",
      "opcode" : "$81"
   },
   {
      "bytes" : "2",
      "description" : "Store Accumulator",
      "opcode" : "$91",
      "name" : "STA",
      "mode" : "(Indirect),Y"
   },
   {
      "bytes" : "2",
      "description" : "Store X Register",
      "name" : "STX",
      "opcode" : "$86",
      "mode" : "ZeroPage"
   },
   {
      "mode" : "ZeroPage,Y",
      "name" : "STX",
      "opcode" : "$96",
      "bytes" : "2",
      "description" : "Store X Register"
   },
   {
      "mode" : "Absolute",
      "name" : "STX",
      "opcode" : "$8E",
      "bytes" : "3",
      "description" : "Store X Register"
   },
   {
      "mode" : "ZeroPage",
      "name" : "STY",
      "opcode" : "$84",
      "description" : "Store Y Register",
      "bytes" : "2"
   },
   {
      "mode" : "ZeroPage,X",
      "name" : "STY",
      "opcode" : "$94",
      "bytes" : "2",
      "description" : "Store Y Register"
   },
   {
      "bytes" : "3",
      "description" : "Store Y Register",
      "name" : "STY",
      "opcode" : "$8C",
      "mode" : "Absolute"
   },
   {
      "mode" : "Implied",
      "name" : "TAX",
      "opcode" : "$AA",
      "description" : "Transfer Accumulator to X",
      "bytes" : "1"
   },
   {
      "mode" : "Implied",
      "description" : "Transfer Accumulator to Y",
      "bytes" : "1",
      "name" : "TAY",
      "opcode" : "$A8"
   },
   {
      "mode" : "Implied",
      "bytes" : "1",
      "description" : "Transfer Stack Pointer to X",
      "name" : "TSX",
      "opcode" : "$BA"
   },
   {
      "mode" : "Implied",
      "bytes" : "1",
      "description" : "Transfer X to Accumulator",
      "opcode" : "$8A",
      "name" : "TXA"
   },
   {
      "description" : "Transfer X to Stack Pointer",
      "bytes" : "1",
      "name" : "TXS",
      "opcode" : "$9A",
      "mode" : "Implied"
   },
   {
      "mode" : "Implied",
      "description" : "Transfer Y to Accumulator",
      "bytes" : "1",
      "name" : "TYA",
      "opcode" : "$98"
   }
]

6502_instructions.pl

#!/usr/bin/perl -w
use JSON;
use HTML::TableExtract;
use LWP::Simple;
use strict;

# Download the file if needed
my $reference = "reference.html";
if (! -f $reference)
{
	my $url = "http://www.obelisk.me.uk/6502/reference.html";
	getstore($url, $reference);
}

my $html;
{
	local $/;
	open my $file, '<', $reference or die "Cannot open '$reference': $!\n";
	$html = <$file>;
	close $file;
}

# Get the instructions and their descriptions from H3 tags
my @headers;
while ($html =~ m{<H3><A NAME="([A-Z]{3})"></A>\1 - (.*)</H3>}g)
{
	push @headers, { "name" => "$1", "description" => "$2" };
}

# Parse the tables to gain information about individual instructions
my @instructions;
my $i = 0;
my $te = HTML::TableExtract->new("headers" => [ "Addressing Mode", "Opcode", "Bytes", "Cycles" ]);
$te->parse($html);
for my $ts ($te->tables)
{
	for my $row ($ts->rows)
	{
		s/[\n\s]//g for (@{$row});
		push @instructions, {
			"name" => $headers[$i]->{"name"},
			"description" => $headers[$i]->{"description"},
			"mode" => ${$row}[0],
			"opcode" => ${$row}[1],
			"bytes" => ${$row}[2],
		};
	}
	$i++;
}
my $json = JSON->new();
print $json->pretty->encode(\@instructions);

I've more than once needed the 6502 instruction set in a machine-readable format, typically to generate code because I'm lazy. Thought someone else might find it a tad useful. It's literally just this reference parsed through some Perl

Thanx, it's really helpful