diff options
Diffstat (limited to 'src/emu/cpu/m6502/t6502.c')
-rw-r--r-- | src/emu/cpu/m6502/t6502.c | 360 |
1 files changed, 360 insertions, 0 deletions
diff --git a/src/emu/cpu/m6502/t6502.c b/src/emu/cpu/m6502/t6502.c new file mode 100644 index 00000000000..806b63379f4 --- /dev/null +++ b/src/emu/cpu/m6502/t6502.c @@ -0,0 +1,360 @@ +/***************************************************************************** + * + * tbl6502.c + * 6502 opcode functions and function pointer table + * + * Copyright (c) 1998,1999,2000 Juergen Buchmueller, all rights reserved. + * + * - This source code is released as freeware for non-commercial purposes. + * - You are free to use and redistribute this code in modified or + * unmodified form, provided you list me in the credits. + * - If you modify this source code, you must add a notice to each modified + * source file that it has been changed. If you're a nice person, you + * will clearly mark each change too. :) + * - If you wish to use this for commercial purposes, please contact me at + * pullmoll@t-online.de + * - The author of this copywritten work reserves the right to change the + * terms of its usage and license at any time, including retroactively + * - This entire notice must remain in the source code. + * + * 2003-05-26 Fixed PHP, PLP, PHA, PLA cycle counts. [SJ] + * 2004-04-30 Fixed STX (abs) cycle count. [SJ] + * + *****************************************************************************/ + +#undef OP +#define OP(nn) INLINE void m6502_##nn(void) + +/***************************************************************************** + ***************************************************************************** + * + * plain vanilla 6502 opcodes + * + ***************************************************************************** + * op temp cycles rdmem opc wrmem ********************/ + +OP(00) { BRK; } /* 7 BRK */ +OP(20) { JSR; } /* 6 JSR */ +OP(40) { RTI; } /* 6 RTI */ +OP(60) { RTS; } /* 6 RTS */ +OP(80) { int tmp; RD_IMM; NOP; } /* 2 NOP IMM */ +OP(a0) { int tmp; RD_IMM; LDY; } /* 2 LDY IMM */ +OP(c0) { int tmp; RD_IMM; CPY; } /* 2 CPY IMM */ +OP(e0) { int tmp; RD_IMM; CPX; } /* 2 CPX IMM */ + +OP(10) { int tmp; BPL; } /* 2-4 BPL REL */ +OP(30) { int tmp; BMI; } /* 2-4 BMI REL */ +OP(50) { int tmp; BVC; } /* 2-4 BVC REL */ +OP(70) { int tmp; BVS; } /* 2-4 BVS REL */ +OP(90) { int tmp; BCC; } /* 2-4 BCC REL */ +OP(b0) { int tmp; BCS; } /* 2-4 BCS REL */ +OP(d0) { int tmp; BNE; } /* 2-4 BNE REL */ +OP(f0) { int tmp; BEQ; } /* 2-4 BEQ REL */ + +OP(01) { int tmp; RD_IDX; ORA; } /* 6 ORA IDX */ +OP(21) { int tmp; RD_IDX; AND; } /* 6 AND IDX */ +OP(41) { int tmp; RD_IDX; EOR; } /* 6 EOR IDX */ +OP(61) { int tmp; RD_IDX; ADC; } /* 6 ADC IDX */ +OP(81) { int tmp; STA; WR_IDX; } /* 6 STA IDX */ +OP(a1) { int tmp; RD_IDX; LDA; } /* 6 LDA IDX */ +OP(c1) { int tmp; RD_IDX; CMP; } /* 6 CMP IDX */ +OP(e1) { int tmp; RD_IDX; SBC; } /* 6 SBC IDX */ + +OP(11) { int tmp; RD_IDY_P; ORA; } /* 5 ORA IDY page penalty */ +OP(31) { int tmp; RD_IDY_P; AND; } /* 5 AND IDY page penalty */ +OP(51) { int tmp; RD_IDY_P; EOR; } /* 5 EOR IDY page penalty */ +OP(71) { int tmp; RD_IDY_P; ADC; } /* 5 ADC IDY page penalty */ +OP(91) { int tmp; STA; WR_IDY_NP; } /* 6 STA IDY */ +OP(b1) { int tmp; RD_IDY_P; LDA; } /* 5 LDA IDY page penalty */ +OP(d1) { int tmp; RD_IDY_P; CMP; } /* 5 CMP IDY page penalty */ +OP(f1) { int tmp; RD_IDY_P; SBC; } /* 5 SBC IDY page penalty */ + +OP(02) { KIL; } /* 1 KIL */ +OP(22) { KIL; } /* 1 KIL */ +OP(42) { KIL; } /* 1 KIL */ +OP(62) { KIL; } /* 1 KIL */ +OP(82) { int tmp; RD_IMM; NOP; } /* 2 NOP IMM */ +OP(a2) { int tmp; RD_IMM; LDX; } /* 2 LDX IMM */ +OP(c2) { int tmp; RD_IMM; NOP; } /* 2 NOP IMM */ +OP(e2) { int tmp; RD_IMM; NOP; } /* 2 NOP IMM */ + +OP(12) { KIL; } /* 1 KIL */ +OP(32) { KIL; } /* 1 KIL */ +OP(52) { KIL; } /* 1 KIL */ +OP(72) { KIL; } /* 1 KIL */ +OP(92) { KIL; } /* 1 KIL */ +OP(b2) { KIL; } /* 1 KIL */ +OP(d2) { KIL; } /* 1 KIL */ +OP(f2) { KIL; } /* 1 KIL */ + +OP(03) { int tmp; RD_IDX; WB_EA; SLO; WB_EA; } /* 7 SLO IDX */ +OP(23) { int tmp; RD_IDX; WB_EA; RLA; WB_EA; } /* 7 RLA IDX */ +OP(43) { int tmp; RD_IDX; WB_EA; SRE; WB_EA; } /* 7 SRE IDX */ +OP(63) { int tmp; RD_IDX; WB_EA; RRA; WB_EA; } /* 7 RRA IDX */ +OP(83) { int tmp; SAX; WR_IDX; } /* 6 SAX IDX */ +OP(a3) { int tmp; RD_IDX; LAX; } /* 6 LAX IDX */ +OP(c3) { int tmp; RD_IDX; WB_EA; DCP; WB_EA; } /* 7 DCP IDX */ +OP(e3) { int tmp; RD_IDX; WB_EA; ISB; WB_EA; } /* 7 ISB IDX */ + +OP(13) { int tmp; RD_IDY_NP; WB_EA; SLO; WB_EA; } /* 7 SLO IDY */ +OP(33) { int tmp; RD_IDY_NP; WB_EA; RLA; WB_EA; } /* 7 RLA IDY */ +OP(53) { int tmp; RD_IDY_NP; WB_EA; SRE; WB_EA; } /* 7 SRE IDY */ +OP(73) { int tmp; RD_IDY_NP; WB_EA; RRA; WB_EA; } /* 7 RRA IDY */ +OP(93) { int tmp; EA_IDY_NP; SAH; WB_EA; } /* 5 SAH IDY */ +OP(b3) { int tmp; RD_IDY_P; LAX; } /* 5 LAX IDY page penalty */ +OP(d3) { int tmp; RD_IDY_NP; WB_EA; DCP; WB_EA; } /* 7 DCP IDY */ +OP(f3) { int tmp; RD_IDY_NP; WB_EA; ISB; WB_EA; } /* 7 ISB IDY */ + +OP(04) { int tmp; RD_ZPG; NOP; } /* 3 NOP ZPG */ +OP(24) { int tmp; RD_ZPG; BIT; } /* 3 BIT ZPG */ +OP(44) { int tmp; RD_ZPG; NOP; } /* 3 NOP ZPG */ +OP(64) { int tmp; RD_ZPG; NOP; } /* 3 NOP ZPG */ +OP(84) { int tmp; STY; WR_ZPG; } /* 3 STY ZPG */ +OP(a4) { int tmp; RD_ZPG; LDY; } /* 3 LDY ZPG */ +OP(c4) { int tmp; RD_ZPG; CPY; } /* 3 CPY ZPG */ +OP(e4) { int tmp; RD_ZPG; CPX; } /* 3 CPX ZPG */ + +OP(14) { int tmp; RD_ZPX; NOP; } /* 4 NOP ZPX */ +OP(34) { int tmp; RD_ZPX; NOP; } /* 4 NOP ZPX */ +OP(54) { int tmp; RD_ZPX; NOP; } /* 4 NOP ZPX */ +OP(74) { int tmp; RD_ZPX; NOP; } /* 4 NOP ZPX */ +OP(94) { int tmp; STY; WR_ZPX; } /* 4 STY ZPX */ +OP(b4) { int tmp; RD_ZPX; LDY; } /* 4 LDY ZPX */ +OP(d4) { int tmp; RD_ZPX; NOP; } /* 4 NOP ZPX */ +OP(f4) { int tmp; RD_ZPX; NOP; } /* 4 NOP ZPX */ + +OP(05) { int tmp; RD_ZPG; ORA; } /* 3 ORA ZPG */ +OP(25) { int tmp; RD_ZPG; AND; } /* 3 AND ZPG */ +OP(45) { int tmp; RD_ZPG; EOR; } /* 3 EOR ZPG */ +OP(65) { int tmp; RD_ZPG; ADC; } /* 3 ADC ZPG */ +OP(85) { int tmp; STA; WR_ZPG; } /* 3 STA ZPG */ +OP(a5) { int tmp; RD_ZPG; LDA; } /* 3 LDA ZPG */ +OP(c5) { int tmp; RD_ZPG; CMP; } /* 3 CMP ZPG */ +OP(e5) { int tmp; RD_ZPG; SBC; } /* 3 SBC ZPG */ + +OP(15) { int tmp; RD_ZPX; ORA; } /* 4 ORA ZPX */ +OP(35) { int tmp; RD_ZPX; AND; } /* 4 AND ZPX */ +OP(55) { int tmp; RD_ZPX; EOR; } /* 4 EOR ZPX */ +OP(75) { int tmp; RD_ZPX; ADC; } /* 4 ADC ZPX */ +OP(95) { int tmp; STA; WR_ZPX; } /* 4 STA ZPX */ +OP(b5) { int tmp; RD_ZPX; LDA; } /* 4 LDA ZPX */ +OP(d5) { int tmp; RD_ZPX; CMP; } /* 4 CMP ZPX */ +OP(f5) { int tmp; RD_ZPX; SBC; } /* 4 SBC ZPX */ + +OP(06) { int tmp; RD_ZPG; WB_EA; ASL; WB_EA; } /* 5 ASL ZPG */ +OP(26) { int tmp; RD_ZPG; WB_EA; ROL; WB_EA; } /* 5 ROL ZPG */ +OP(46) { int tmp; RD_ZPG; WB_EA; LSR; WB_EA; } /* 5 LSR ZPG */ +OP(66) { int tmp; RD_ZPG; WB_EA; ROR; WB_EA; } /* 5 ROR ZPG */ +OP(86) { int tmp; STX; WR_ZPG; } /* 3 STX ZPG */ +OP(a6) { int tmp; RD_ZPG; LDX; } /* 3 LDX ZPG */ +OP(c6) { int tmp; RD_ZPG; WB_EA; DEC; WB_EA; } /* 5 DEC ZPG */ +OP(e6) { int tmp; RD_ZPG; WB_EA; INC; WB_EA; } /* 5 INC ZPG */ + +OP(16) { int tmp; RD_ZPX; WB_EA; ASL; WB_EA; } /* 6 ASL ZPX */ +OP(36) { int tmp; RD_ZPX; WB_EA; ROL; WB_EA; } /* 6 ROL ZPX */ +OP(56) { int tmp; RD_ZPX; WB_EA; LSR; WB_EA; } /* 6 LSR ZPX */ +OP(76) { int tmp; RD_ZPX; WB_EA; ROR; WB_EA; } /* 6 ROR ZPX */ +OP(96) { int tmp; STX; WR_ZPY; } /* 4 STX ZPY */ +OP(b6) { int tmp; RD_ZPY; LDX; } /* 4 LDX ZPY */ +OP(d6) { int tmp; RD_ZPX; WB_EA; DEC; WB_EA; } /* 6 DEC ZPX */ +OP(f6) { int tmp; RD_ZPX; WB_EA; INC; WB_EA; } /* 6 INC ZPX */ + +OP(07) { int tmp; RD_ZPG; WB_EA; SLO; WB_EA; } /* 5 SLO ZPG */ +OP(27) { int tmp; RD_ZPG; WB_EA; RLA; WB_EA; } /* 5 RLA ZPG */ +OP(47) { int tmp; RD_ZPG; WB_EA; SRE; WB_EA; } /* 5 SRE ZPG */ +OP(67) { int tmp; RD_ZPG; WB_EA; RRA; WB_EA; } /* 5 RRA ZPG */ +OP(87) { int tmp; SAX; WR_ZPG; } /* 3 SAX ZPG */ +OP(a7) { int tmp; RD_ZPG; LAX; } /* 3 LAX ZPG */ +OP(c7) { int tmp; RD_ZPG; WB_EA; DCP; WB_EA; } /* 5 DCP ZPG */ +OP(e7) { int tmp; RD_ZPG; WB_EA; ISB; WB_EA; } /* 5 ISB ZPG */ + +OP(17) { int tmp; RD_ZPX; WB_EA; SLO; WB_EA; } /* 6 SLO ZPX */ +OP(37) { int tmp; RD_ZPX; WB_EA; RLA; WB_EA; } /* 6 RLA ZPX */ +OP(57) { int tmp; RD_ZPX; WB_EA; SRE; WB_EA; } /* 6 SRE ZPX */ +OP(77) { int tmp; RD_ZPX; WB_EA; RRA; WB_EA; } /* 6 RRA ZPX */ +OP(97) { int tmp; SAX; WR_ZPY; } /* 4 SAX ZPY */ +OP(b7) { int tmp; RD_ZPY; LAX; } /* 4 LAX ZPY */ +OP(d7) { int tmp; RD_ZPX; WB_EA; DCP; WB_EA; } /* 6 DCP ZPX */ +OP(f7) { int tmp; RD_ZPX; WB_EA; ISB; WB_EA; } /* 6 ISB ZPX */ + +OP(08) { RD_DUM; PHP; } /* 3 PHP */ +OP(28) { RD_DUM; PLP; } /* 4 PLP */ +OP(48) { RD_DUM; PHA; } /* 3 PHA */ +OP(68) { RD_DUM; PLA; } /* 4 PLA */ +OP(88) { RD_DUM; DEY; } /* 2 DEY */ +OP(a8) { RD_DUM; TAY; } /* 2 TAY */ +OP(c8) { RD_DUM; INY; } /* 2 INY */ +OP(e8) { RD_DUM; INX; } /* 2 INX */ + +OP(18) { RD_DUM; CLC; } /* 2 CLC */ +OP(38) { RD_DUM; SEC; } /* 2 SEC */ +OP(58) { RD_DUM; CLI; } /* 2 CLI */ +OP(78) { RD_DUM; SEI; } /* 2 SEI */ +OP(98) { RD_DUM; TYA; } /* 2 TYA */ +OP(b8) { RD_DUM; CLV; } /* 2 CLV */ +OP(d8) { RD_DUM; CLD; } /* 2 CLD */ +OP(f8) { RD_DUM; SED; } /* 2 SED */ + +OP(09) { int tmp; RD_IMM; ORA; } /* 2 ORA IMM */ +OP(29) { int tmp; RD_IMM; AND; } /* 2 AND IMM */ +OP(49) { int tmp; RD_IMM; EOR; } /* 2 EOR IMM */ +OP(69) { int tmp; RD_IMM; ADC; } /* 2 ADC IMM */ +OP(89) { int tmp; RD_IMM; NOP; } /* 2 NOP IMM */ +OP(a9) { int tmp; RD_IMM; LDA; } /* 2 LDA IMM */ +OP(c9) { int tmp; RD_IMM; CMP; } /* 2 CMP IMM */ +OP(e9) { int tmp; RD_IMM; SBC; } /* 2 SBC IMM */ + +OP(19) { int tmp; RD_ABY_P; ORA; } /* 4 ORA ABY page penalty */ +OP(39) { int tmp; RD_ABY_P; AND; } /* 4 AND ABY page penalty */ +OP(59) { int tmp; RD_ABY_P; EOR; } /* 4 EOR ABY page penalty */ +OP(79) { int tmp; RD_ABY_P; ADC; } /* 4 ADC ABY page penalty */ +OP(99) { int tmp; STA; WR_ABY_NP; } /* 5 STA ABY */ +OP(b9) { int tmp; RD_ABY_P; LDA; } /* 4 LDA ABY page penalty */ +OP(d9) { int tmp; RD_ABY_P; CMP; } /* 4 CMP ABY page penalty */ +OP(f9) { int tmp; RD_ABY_P; SBC; } /* 4 SBC ABY page penalty */ + +OP(0a) { int tmp; RD_DUM; RD_ACC; ASL; WB_ACC; } /* 2 ASL A */ +OP(2a) { int tmp; RD_DUM; RD_ACC; ROL; WB_ACC; } /* 2 ROL A */ +OP(4a) { int tmp; RD_DUM; RD_ACC; LSR; WB_ACC; } /* 2 LSR A */ +OP(6a) { int tmp; RD_DUM; RD_ACC; ROR; WB_ACC; } /* 2 ROR A */ +OP(8a) { RD_DUM; TXA; } /* 2 TXA */ +OP(aa) { RD_DUM; TAX; } /* 2 TAX */ +OP(ca) { RD_DUM; DEX; } /* 2 DEX */ +OP(ea) { RD_DUM; NOP; } /* 2 NOP */ + +OP(1a) { RD_DUM; NOP; } /* 2 NOP */ +OP(3a) { RD_DUM; NOP; } /* 2 NOP */ +OP(5a) { RD_DUM; NOP; } /* 2 NOP */ +OP(7a) { RD_DUM; NOP; } /* 2 NOP */ +OP(9a) { RD_DUM; TXS; } /* 2 TXS */ +OP(ba) { RD_DUM; TSX; } /* 2 TSX */ +OP(da) { RD_DUM; NOP; } /* 2 NOP */ +OP(fa) { RD_DUM; NOP; } /* 2 NOP */ + +OP(0b) { int tmp; RD_IMM; ANC; } /* 2 ANC IMM */ +OP(2b) { int tmp; RD_IMM; ANC; } /* 2 ANC IMM */ +OP(4b) { int tmp; RD_IMM; ASR; WB_ACC; } /* 2 ASR IMM */ +OP(6b) { int tmp; RD_IMM; ARR; WB_ACC; } /* 2 ARR IMM */ +OP(8b) { int tmp; RD_IMM; AXA; } /* 2 AXA IMM */ +OP(ab) { int tmp; RD_IMM; OAL; } /* 2 OAL IMM */ +OP(cb) { int tmp; RD_IMM; ASX; } /* 2 ASX IMM */ +OP(eb) { int tmp; RD_IMM; SBC; } /* 2 SBC IMM */ + +OP(1b) { int tmp; RD_ABY_NP; WB_EA; SLO; WB_EA; } /* 7 SLO ABY */ +OP(3b) { int tmp; RD_ABY_NP; WB_EA; RLA; WB_EA; } /* 7 RLA ABY */ +OP(5b) { int tmp; RD_ABY_NP; WB_EA; SRE; WB_EA; } /* 7 SRE ABY */ +OP(7b) { int tmp; RD_ABY_NP; WB_EA; RRA; WB_EA; } /* 7 RRA ABY */ +OP(9b) { int tmp; EA_ABY_NP; SSH; WB_EA; } /* 5 SSH ABY */ +OP(bb) { int tmp; RD_ABY_P; AST; } /* 4 AST ABY page penalty */ +OP(db) { int tmp; RD_ABY_NP; WB_EA; DCP; WB_EA; } /* 7 DCP ABY */ +OP(fb) { int tmp; RD_ABY_NP; WB_EA; ISB; WB_EA; } /* 7 ISB ABY */ + +OP(0c) { int tmp; RD_ABS; NOP; } /* 4 NOP ABS */ +OP(2c) { int tmp; RD_ABS; BIT; } /* 4 BIT ABS */ +OP(4c) { EA_ABS; JMP; } /* 3 JMP ABS */ +OP(6c) { int tmp; EA_IND; JMP; } /* 5 JMP IND */ +OP(8c) { int tmp; STY; WR_ABS; } /* 4 STY ABS */ +OP(ac) { int tmp; RD_ABS; LDY; } /* 4 LDY ABS */ +OP(cc) { int tmp; RD_ABS; CPY; } /* 4 CPY ABS */ +OP(ec) { int tmp; RD_ABS; CPX; } /* 4 CPX ABS */ + +OP(1c) { int tmp; RD_ABX_P; NOP; } /* 4 NOP ABX page penalty */ +OP(3c) { int tmp; RD_ABX_P; NOP; } /* 4 NOP ABX page penalty */ +OP(5c) { int tmp; RD_ABX_P; NOP; } /* 4 NOP ABX page penalty */ +OP(7c) { int tmp; RD_ABX_P; NOP; } /* 4 NOP ABX page penalty */ +OP(9c) { int tmp; EA_ABX_NP; SYH; WB_EA; } /* 5 SYH ABX */ +OP(bc) { int tmp; RD_ABX_P; LDY; } /* 4 LDY ABX page penalty */ +OP(dc) { int tmp; RD_ABX_P; NOP; } /* 4 NOP ABX page penalty */ +OP(fc) { int tmp; RD_ABX_P; NOP; } /* 4 NOP ABX page penalty */ + +OP(0d) { int tmp; RD_ABS; ORA; } /* 4 ORA ABS */ +OP(2d) { int tmp; RD_ABS; AND; } /* 4 AND ABS */ +OP(4d) { int tmp; RD_ABS; EOR; } /* 4 EOR ABS */ +OP(6d) { int tmp; RD_ABS; ADC; } /* 4 ADC ABS */ +OP(8d) { int tmp; STA; WR_ABS; } /* 4 STA ABS */ +OP(ad) { int tmp; RD_ABS; LDA; } /* 4 LDA ABS */ +OP(cd) { int tmp; RD_ABS; CMP; } /* 4 CMP ABS */ +OP(ed) { int tmp; RD_ABS; SBC; } /* 4 SBC ABS */ + +OP(1d) { int tmp; RD_ABX_P; ORA; } /* 4 ORA ABX page penalty */ +OP(3d) { int tmp; RD_ABX_P; AND; } /* 4 AND ABX page penalty */ +OP(5d) { int tmp; RD_ABX_P; EOR; } /* 4 EOR ABX page penalty */ +OP(7d) { int tmp; RD_ABX_P; ADC; } /* 4 ADC ABX page penalty */ +OP(9d) { int tmp; STA; WR_ABX_NP; } /* 5 STA ABX */ +OP(bd) { int tmp; RD_ABX_P; LDA; } /* 4 LDA ABX page penalty */ +OP(dd) { int tmp; RD_ABX_P; CMP; } /* 4 CMP ABX page penalty */ +OP(fd) { int tmp; RD_ABX_P; SBC; } /* 4 SBC ABX page penalty */ + +OP(0e) { int tmp; RD_ABS; WB_EA; ASL; WB_EA; } /* 6 ASL ABS */ +OP(2e) { int tmp; RD_ABS; WB_EA; ROL; WB_EA; } /* 6 ROL ABS */ +OP(4e) { int tmp; RD_ABS; WB_EA; LSR; WB_EA; } /* 6 LSR ABS */ +OP(6e) { int tmp; RD_ABS; WB_EA; ROR; WB_EA; } /* 6 ROR ABS */ +OP(8e) { int tmp; STX; WR_ABS; } /* 4 STX ABS */ +OP(ae) { int tmp; RD_ABS; LDX; } /* 4 LDX ABS */ +OP(ce) { int tmp; RD_ABS; WB_EA; DEC; WB_EA; } /* 6 DEC ABS */ +OP(ee) { int tmp; RD_ABS; WB_EA; INC; WB_EA; } /* 6 INC ABS */ + +OP(1e) { int tmp; RD_ABX_NP; WB_EA; ASL; WB_EA; } /* 7 ASL ABX */ +OP(3e) { int tmp; RD_ABX_NP; WB_EA; ROL; WB_EA; } /* 7 ROL ABX */ +OP(5e) { int tmp; RD_ABX_NP; WB_EA; LSR; WB_EA; } /* 7 LSR ABX */ +OP(7e) { int tmp; RD_ABX_NP; WB_EA; ROR; WB_EA; } /* 7 ROR ABX */ +OP(9e) { int tmp; EA_ABY_NP; SXH; WB_EA; } /* 5 SXH ABY */ +OP(be) { int tmp; RD_ABY_P; LDX; } /* 4 LDX ABY page penalty */ +OP(de) { int tmp; RD_ABX_NP; WB_EA; DEC; WB_EA; } /* 7 DEC ABX */ +OP(fe) { int tmp; RD_ABX_NP; WB_EA; INC; WB_EA; } /* 7 INC ABX */ + +OP(0f) { int tmp; RD_ABS; WB_EA; SLO; WB_EA; } /* 6 SLO ABS */ +OP(2f) { int tmp; RD_ABS; WB_EA; RLA; WB_EA; } /* 6 RLA ABS */ +OP(4f) { int tmp; RD_ABS; WB_EA; SRE; WB_EA; } /* 6 SRE ABS */ +OP(6f) { int tmp; RD_ABS; WB_EA; RRA; WB_EA; } /* 6 RRA ABS */ +OP(8f) { int tmp; SAX; WR_ABS; } /* 4 SAX ABS */ +OP(af) { int tmp; RD_ABS; LAX; } /* 4 LAX ABS */ +OP(cf) { int tmp; RD_ABS; WB_EA; DCP; WB_EA; } /* 6 DCP ABS */ +OP(ef) { int tmp; RD_ABS; WB_EA; ISB; WB_EA; } /* 6 ISB ABS */ + +OP(1f) { int tmp; RD_ABX_NP; WB_EA; SLO; WB_EA; } /* 7 SLO ABX */ +OP(3f) { int tmp; RD_ABX_NP; WB_EA; RLA; WB_EA; } /* 7 RLA ABX */ +OP(5f) { int tmp; RD_ABX_NP; WB_EA; SRE; WB_EA; } /* 7 SRE ABX */ +OP(7f) { int tmp; RD_ABX_NP; WB_EA; RRA; WB_EA; } /* 7 RRA ABX */ +OP(9f) { int tmp; EA_ABY_NP; SAH; WB_EA; } /* 5 SAH ABY */ +OP(bf) { int tmp; RD_ABY_P; LAX; } /* 4 LAX ABY page penalty */ +OP(df) { int tmp; RD_ABX_NP; WB_EA; DCP; WB_EA; } /* 7 DCP ABX */ +OP(ff) { int tmp; RD_ABX_NP; WB_EA; ISB; WB_EA; } /* 7 ISB ABX */ + +/* and here's the array of function pointers */ + +static void (*insn6502[0x100])(void) = { + m6502_00,m6502_01,m6502_02,m6502_03,m6502_04,m6502_05,m6502_06,m6502_07, + m6502_08,m6502_09,m6502_0a,m6502_0b,m6502_0c,m6502_0d,m6502_0e,m6502_0f, + m6502_10,m6502_11,m6502_12,m6502_13,m6502_14,m6502_15,m6502_16,m6502_17, + m6502_18,m6502_19,m6502_1a,m6502_1b,m6502_1c,m6502_1d,m6502_1e,m6502_1f, + m6502_20,m6502_21,m6502_22,m6502_23,m6502_24,m6502_25,m6502_26,m6502_27, + m6502_28,m6502_29,m6502_2a,m6502_2b,m6502_2c,m6502_2d,m6502_2e,m6502_2f, + m6502_30,m6502_31,m6502_32,m6502_33,m6502_34,m6502_35,m6502_36,m6502_37, + m6502_38,m6502_39,m6502_3a,m6502_3b,m6502_3c,m6502_3d,m6502_3e,m6502_3f, + m6502_40,m6502_41,m6502_42,m6502_43,m6502_44,m6502_45,m6502_46,m6502_47, + m6502_48,m6502_49,m6502_4a,m6502_4b,m6502_4c,m6502_4d,m6502_4e,m6502_4f, + m6502_50,m6502_51,m6502_52,m6502_53,m6502_54,m6502_55,m6502_56,m6502_57, + m6502_58,m6502_59,m6502_5a,m6502_5b,m6502_5c,m6502_5d,m6502_5e,m6502_5f, + m6502_60,m6502_61,m6502_62,m6502_63,m6502_64,m6502_65,m6502_66,m6502_67, + m6502_68,m6502_69,m6502_6a,m6502_6b,m6502_6c,m6502_6d,m6502_6e,m6502_6f, + m6502_70,m6502_71,m6502_72,m6502_73,m6502_74,m6502_75,m6502_76,m6502_77, + m6502_78,m6502_79,m6502_7a,m6502_7b,m6502_7c,m6502_7d,m6502_7e,m6502_7f, + m6502_80,m6502_81,m6502_82,m6502_83,m6502_84,m6502_85,m6502_86,m6502_87, + m6502_88,m6502_89,m6502_8a,m6502_8b,m6502_8c,m6502_8d,m6502_8e,m6502_8f, + m6502_90,m6502_91,m6502_92,m6502_93,m6502_94,m6502_95,m6502_96,m6502_97, + m6502_98,m6502_99,m6502_9a,m6502_9b,m6502_9c,m6502_9d,m6502_9e,m6502_9f, + m6502_a0,m6502_a1,m6502_a2,m6502_a3,m6502_a4,m6502_a5,m6502_a6,m6502_a7, + m6502_a8,m6502_a9,m6502_aa,m6502_ab,m6502_ac,m6502_ad,m6502_ae,m6502_af, + m6502_b0,m6502_b1,m6502_b2,m6502_b3,m6502_b4,m6502_b5,m6502_b6,m6502_b7, + m6502_b8,m6502_b9,m6502_ba,m6502_bb,m6502_bc,m6502_bd,m6502_be,m6502_bf, + m6502_c0,m6502_c1,m6502_c2,m6502_c3,m6502_c4,m6502_c5,m6502_c6,m6502_c7, + m6502_c8,m6502_c9,m6502_ca,m6502_cb,m6502_cc,m6502_cd,m6502_ce,m6502_cf, + m6502_d0,m6502_d1,m6502_d2,m6502_d3,m6502_d4,m6502_d5,m6502_d6,m6502_d7, + m6502_d8,m6502_d9,m6502_da,m6502_db,m6502_dc,m6502_dd,m6502_de,m6502_df, + m6502_e0,m6502_e1,m6502_e2,m6502_e3,m6502_e4,m6502_e5,m6502_e6,m6502_e7, + m6502_e8,m6502_e9,m6502_ea,m6502_eb,m6502_ec,m6502_ed,m6502_ee,m6502_ef, + m6502_f0,m6502_f1,m6502_f2,m6502_f3,m6502_f4,m6502_f5,m6502_f6,m6502_f7, + m6502_f8,m6502_f9,m6502_fa,m6502_fb,m6502_fc,m6502_fd,m6502_fe,m6502_ff +}; + |