6502 Instruction Set

VisitntX
MOS 6502 Instruction Set
========================

This is the instruction set for the MOS 6502 that I, VisitntX, rewrote. It's
based in a previous list I found on internet. The columns in the right are the
opposite "instruction" found in the left. Well, that's a way to say it so with
that begginers can have an idea at where to look. It's recommended basic assembler
knowledge for use this. It's intended to an easy find of the intructions when
making game genies.



        00 - BRK                        20 - JSR
        01 - ORA - (Indirect,X)         21 - AND - (Indirect,X)
        02 - Future Expansion           22 - Future Expansion
        03 - Future Expansion           23 - Future Expansion
        04 - Future Expansion           24 - BIT - Zero Page
        05 - ORA - Zero Page            25 - AND - Zero Page
        06 - ASL - Zero Page            26 - ROL - Zero Page
        07 - Future Expansion           27 - Future Expansion
        08 - PHP                        28 - PLP
        09 - ORA - Immediate            29 - AND - Immediate
        0A - ASL - Accumulator          2A - ROL - Accumulator
        0B - Future Expansion           2B - Future Expansion
        0C - Future Expansion           2C - BIT - Absolute
        0D - ORA - Absolute             2D - AND - Absolute
        0E - ASL - Absolute             2E - ROL - Absolute
        0F - Future Expansion           2F - Future Expansion
        10 - BPL                        30 - BMI
        11 - ORA - (Indirect),Y         31 - AND - (Indirect),Y
        12 - Future Expansion           32 - Future Expansion
        13 - Future Expansion           33 - Future Expansion
        14 - Future Expansion           34 - Future Expansion
        15 - ORA - Zero Page,X          35 - AND - Zero Page,X
        16 - ASL - Zero Page,X          36 - ROL - Zero Page,X
        17 - Future Expansion           37 - Future Expansion
        18 - CLC                        38 - SEC
        19 - ORA - Absolute,Y           39 - AND - Absolute,Y
        1A - Future Expansion           3A - Future Expansion
        1B - Future Expansion           3B - Future Expansion
        1C - Future Expansion           3C - Future Expansion
        1D - ORA - Absolute,X           3D - AND - Absolute,X
        1E - ASL - Absolute,X           3E - ROL - Absolute,X
        1F - Future Expansion           3F - Future Expansion

        40 - RTI                        60 - RTS
        41 - EOR - (Indirect,X)         61 - ADC - (Indirect,X)
        42 - Future Expansion           62 - Future Expansion
        43 - Future Expansion           63 - Future Expansion
        44 - Future Expansion           64 - Future Expansion
        45 - EOR - Zero Page            65 - ADC - Zero Page
        46 - LSR - Zero Page            66 - ROR - Zero Page
        47 - Future Expansion           67 - Future Expansion
        48 - PHA                        68 - PLA
        49 - EOR - Immediate            69 - ADC - Immediate
        4A - LSR - Accumulator          6A - ROR - Accumulator
        4B - Future Expansion           6B - Future Expansion
        4C - JMP - Absolute             6C - JMP - Indirect
        4D - EOR - Absolute             6D - ADC - Absolute
        4E - LSR - Absolute             6E - ROR - Absolute
        4F - Future Expansion           6F - Future Expansion
        50 - BVC                        70 - BVS
        51 - EOR - (Indirect),Y         71 - ADC - (Indirect),Y
        52 - Future Expansion           72 - Future Expansion
        53 - Future Expansion           73 - Future Expansion
        54 - Future Expansion           74 - Future Expansion
        55 - EOR - Zero Page,X          75 - ADC - Zero Page,X
        56 - LSR - Zero Page,X          76 - ROR - Zero Page,X
        57 - Future Expansion           77 - Future Expansion
        58 - CLI                        78 - SEI
        59 - EOR - Absolute,Y           79 - ADC - Absolute,Y
        5A - Future Expansion           7A - Future Expansion
        5B - Future Expansion           7B - Future Expansion
        5C - Future Expansion           7C - Future Expansion
        5D - EOR - Absolute,X           7D - ADC - Absolute,X
        5E - LSR - Absolute,X           7E - ROR - Absolute,X
        5F - Future Expansion           7F - Future Expansion

        80 - Future Expansion           A0 - LDY - Immediate
        81 - STA - (Indirect,X)         A1 - LDA - (Indirect,X)
        82 - Future Expansion           A2 - LDX - Immediate
        83 - Future Expansion           A3 - Future Expansion
        84 - STY - Zero Page            A4 - LDY - Zero Page
        85 - STA - Zero Page            A5 - LDA - Zero Page
        86 - STX - Zero Page            A6 - LDX - Zero Page
        87 - Future Expansion           A7 - Future Expansion
        88 - DEY                        A8 - TAY
        89 - Future Expansion           A9 - LDA - Immediate
        8A - TXA                        AA - TAX
        8B - Future Expansion           AB - Future Expansion
        8C - STY - Absolute             AC - LDY - Absolute
        8D - STA - Absolute             AD - LDA - Absolute
        8E - STX - Absolute             AE - LDX - Absolute
        8F - Future Expansion           AF - Future Expansion
        90 - BCC                        B0 - BCS
        91 - STA - (Indirect),Y         B1 - LDA - (Indirect),Y
        92 - Future Expansion           B2 - Future Expansion
        93 - Future Expansion           B3 - Future Expansion
        94 - STY - Zero Page,X          B4 - LDY - Zero Page,X
        95 - STA - Zero Page,X          BS - LDA - Zero Page,X
        96 - STX - Zero Page,Y          B6 - LDX - Zero Page,Y
        97 - Future Expansion           B7 - Future Expansion
        98 - TYA                        B8 - CLV
        99 - STA - Absolute,Y           B9 - LDA - Absolute,Y
        9A - TXS                        BA - TSX
        9B - Future Expansion           BB - Future Expansion
        9C - Future Expansion           BC - LDY - Absolute,X
        9D - STA - Absolute,X           BD - LDA - Absolute,X
        9E - Future Expansion           BE - LDX - Absolute,Y
        9F - Future Expansion           BF - Future Expansion

        C0 - Cpy - Immediate            E0 - CPX - Immediate
        C1 - CMP - (Indirect,X)         E1 - SBC - (Indirect,X)
        C2 - Future Expansion           E2 - Future Expansion
        C3 - Future Expansion           E3 - Future Expansion
        C4 - CPY - Zero Page            E4 - CPX - Zero Page
        C5 - CMP - Zero Page            E5 - SBC - Zero Page
        C6 - DEC - Zero Page            E6 - INC - Zero Page
        C7 - Future Expansion           E7 - Future Expansion
        C8 - INY                        E8 - INX
        C9 - CMP - Immediate            E9 - SBC - Immediate
        CA - DEX                        EA - NOP
        CB - Future Expansion           EB - Future Expansion
        CC - CPY - Absolute             EC - CPX - Absolute
        CD - CMP - Absolute             ED - SBC - Absolute
        CE - DEC - Absolute             EE - INC - Absolute
        CF - Future Expansion           EF - Future Expansion
        D0 - BNE                        F0 - BEQ
        D1 - CMP   ([email protected],Y         F1 - SBC - (Indirect),Y
        D2 - Future Expansion           F2 - Future Expansion
        D3 - Future Expansion           F3 - Future Expansion
        D4 - Future Expansion           F4 - Future Expansion
        D5 - CMP - Zero Page,X          F5 - SBC - Zero Page,X
        D6 - DEC - Zero Page,X          F6 - INC - Zero Page,X
        D7 - Future Expansion           F7 - Future Expansion
        D8 - CLD                        F8 - SED
        D9 - CMP - Absolute,Y           F9 - SBC - Absolute,Y
        DA - Future Expansion           FA - Future Expansion
        DB - Future Expansion           FB - Future Expansion
        DC - Future Expansion           FC - Future Expansion
        DD - CMP - Absolute,X           FD - SBC - Absolute,X
        DE - DEC - Absolute,X           FE - INC - Absolute,X
        DF - Future Expansion           FF - Future Expansion