OPERATING SYSTEM
COMPILER
6502a Reference Sheet:
HI-BYTE ? LO-BYTE ?
0 BRK imp ORA X ind ??? --- ??? --- ??? --- ORA zpg ASL zpg ??? --- PHP imp ORA # ASL A ??? --- ??? --- ORA abs ASL abs ??? ---
1 BPL rel ORA Y ind ??? --- ??? --- ??? --- ORA X zpg ASL X zpg ??? --- CLC imp ORA Y abs ??? --- ??? --- ??? --- ORA X abs ASL X abs ??? ---
2 JSR abs AND X ind ??? --- ??? --- BIT zpg AND zpg ROL zpg ??? --- PLP imp AND # ROL A ??? --- BIT abs AND abs ROL abs ??? ---
3 BMI rel AND Y ind ??? --- ??? --- ??? --- AND X zpg ROL X zpg ??? --- SEC imp AND Y abs ??? --- ??? --- ??? --- AND X abs ROL X abs ??? ---
4 RTI imp EOR X ind ??? --- ??? --- ??? --- EOR zpg LSR zpg ??? --- PHA imp EOR # LSR A ??? --- JMP abs EOR abs LSR abs ??? ---
5 BVC rel EOR Y ind ??? --- ??? --- ??? --- EOR X zpg LSR X zpg ??? --- CLI imp EOR Y abs ??? --- ??? --- ??? --- EOR X abs LSR X abs ??? ---
6 RTS imp ADC X imp ??? --- ??? --- ??? --- ADC zpg ROR zpg ??? --- PLA imp ADC # ROR A ??? --- JMP ind ADC abs ROR abs ??? ---
7 BVS rel ADC Y ind ??? --- ??? --- ??? --- ADC X zpg ROR X zpg ??? --- SEI imp ADC Y abs ??? --- ??? --- ??? --- ADC X abs ROR X abs ??? ---
8 ??? --- STA X ind ??? --- ??? --- STY zpg STA zpg STX zpg ??? --- DEY imp ??? --- TXA imp ??? --- STY abs STA abs STX abs ??? ---
9 BCC rel STA Y ind ??? --- ??? --- STY X zpg STA X zpg STX Y zpg ??? --- TYA imp STA Y abs TXS imp ??? --- ??? --- STA X abs ??? --- ??? ---
A LDY # LDY X ind LDX # ??? --- LDY zpg LDA zpg LDX zpg ??? --- TAY imp LDA # TAX imp ??? --- LDY abs LDA abs LDX abs ??? ---
B BCS rel LDA Y ind ??? --- ??? --- LDY X zpg LDA X zpg LDX Y zpg ??? --- CLV imp LDA Y abs TSX imp ??? --- LDY X abs LDA X abs LDX Y abs ??? ---
C CPY # CMP X ind ??? --- ??? --- CPY zpg CMP zpg DEC zpg ??? --- INY imp CMP # DEX imp ??? --- CPY abs CMP abs DEC abs ??? ---
D BNE rel CMP Y ind ??? --- ??? --- ??? --- CMP X zpg DEC X zpg ??? --- CLD imp CMP Y abs ??? --- ??? --- ??? --- CMP X abs DEC X abs ??? ---
E CPX # SBC X ind ??? --- ??? --- CPX zpg SBC zpg INC zpg ??? --- INX imp SBC # NOP imp ??? --- CPX abs SBC abs INC abs ??? ---
F BEQ rel SBC Y ind ??? --- ??? --- ??? --- SBC X zpg INC X zpg ??? --- SED imp SBC Y abs ??? --- ??? --- ??? --- SBC X abs INC X abs ??? ---
PC: IR: ACC: X: Y: Status Flags N: V: U: B: D: I: Z: C: