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Allow JMP to work with ABX address mode

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Peter Evans 2018-02-21 21:46:41 -06:00
parent 8623945bbf
commit 58a1e31f58
2 changed files with 3 additions and 3 deletions
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2
src/mos6502.addr.c
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@ -26,7 +26,7 @@ static int addr_modes[] = {
IMP, IDX, NOA, NOA, NOA, ZPG, ZPG, NOA, IMP, IMM, ACC, NOA, ABS, ABS, ABS, NOA, // 4x IMP, IDX, NOA, NOA, NOA, ZPG, ZPG, NOA, IMP, IMM, ACC, NOA, ABS, ABS, ABS, NOA, // 4x
REL, IDY, ZPG, NOA, NOA, ZPX, ZPX, NOA, IMP, ABY, NOA, NOA, NOA, ABX, ABX, NOA, // 5x REL, IDY, ZPG, NOA, NOA, ZPX, ZPX, NOA, IMP, ABY, NOA, NOA, NOA, ABX, ABX, NOA, // 5x
IMP, IDX, NOA, NOA, NOA, ZPG, ZPG, NOA, IMP, IMM, ACC, NOA, IND, ABS, ABS, NOA, // 6x IMP, IDX, NOA, NOA, NOA, ZPG, ZPG, NOA, IMP, IMM, ACC, NOA, IND, ABS, ABS, NOA, // 6x
REL, IDY, ZPG, NOA, NOA, ZPX, ZPX, NOA, IMP, ABY, NOA, NOA, NOA, ABX, ABX, NOA, // 7x REL, IDY, ZPG, NOA, NOA, ZPX, ZPX, NOA, IMP, ABY, NOA, NOA, ABX, ABX, ABX, NOA, // 7x
NOA, IDX, NOA, NOA, ZPG, ZPG, ZPG, NOA, IMP, IMM, IMP, NOA, ABS, ABS, ABS, NOA, // 8x NOA, IDX, NOA, NOA, ZPG, ZPG, ZPG, NOA, IMP, IMM, IMP, NOA, ABS, ABS, ABS, NOA, // 8x
REL, IDY, ZPG, NOA, ZPX, ZPX, ZPY, NOA, IMP, ABY, IMP, NOA, NOA, ABX, NOA, NOA, // 9x REL, IDY, ZPG, NOA, ZPX, ZPX, ZPY, NOA, IMP, ABY, IMP, NOA, NOA, ABX, NOA, NOA, // 9x
IMM, IDX, IMM, NOA, ZPG, ZPG, ZPG, NOA, IMP, IMM, IMP, NOA, ABS, ABS, ABS, NOA, // Ax IMM, IDX, IMM, NOA, ZPG, ZPG, ZPG, NOA, IMP, IMM, IMP, NOA, ABS, ABS, ABS, NOA, // Ax

4
src/mos6502.c
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@ -34,7 +34,7 @@ static int instructions[] = {
RTI, EOR, BAD, BAD, BAD, EOR, LSR, BAD, PHA, EOR, LSR, BAD, JMP, EOR, LSR, BAD, // 4x RTI, EOR, BAD, BAD, BAD, EOR, LSR, BAD, PHA, EOR, LSR, BAD, JMP, EOR, LSR, BAD, // 4x
BVC, EOR, EOR, BAD, BAD, EOR, LSR, BAD, CLI, EOR, BAD, BAD, BAD, EOR, LSR, BAD, // 5x BVC, EOR, EOR, BAD, BAD, EOR, LSR, BAD, CLI, EOR, BAD, BAD, BAD, EOR, LSR, BAD, // 5x
RTS, ADC, BAD, BAD, BAD, ADC, ROR, BAD, PLA, ADC, ROR, BAD, JMP, ADC, ROR, BAD, // 6x RTS, ADC, BAD, BAD, BAD, ADC, ROR, BAD, PLA, ADC, ROR, BAD, JMP, ADC, ROR, BAD, // 6x
BVS, ADC, ADC, BAD, BAD, ADC, ROR, BAD, SEI, ADC, BAD, BAD, BAD, ADC, ROR, BAD, // 7x BVS, ADC, ADC, BAD, BAD, ADC, ROR, BAD, SEI, ADC, BAD, BAD, JMP, ADC, ROR, BAD, // 7x
BAD, STA, BAD, BAD, STY, STA, STX, BAD, DEY, BIM, TXA, BAD, STY, STA, STX, BAD, // 8x BAD, STA, BAD, BAD, STY, STA, STX, BAD, DEY, BIM, TXA, BAD, STY, STA, STX, BAD, // 8x
BCC, STA, STA, BAD, STY, STA, STX, BAD, TYA, STA, TXS, BAD, BAD, STA, BAD, BAD, // 9x BCC, STA, STA, BAD, STY, STA, STX, BAD, TYA, STA, TXS, BAD, BAD, STA, BAD, BAD, // 9x
LDY, LDA, LDX, BAD, LDY, LDA, LDX, BAD, TAY, LDA, TAX, BAD, LDY, LDA, LDX, BAD, // Ax LDY, LDA, LDX, BAD, LDY, LDA, LDX, BAD, TAY, LDA, TAX, BAD, LDY, LDA, LDX, BAD, // Ax
@ -131,7 +131,7 @@ static int cycles[] = {
6, 6, 0, 0, 0, 3, 5, 0, 3, 2, 2, 0, 3, 4, 6, 0, // 4x 6, 6, 0, 0, 0, 3, 5, 0, 3, 2, 2, 0, 3, 4, 6, 0, // 4x
2, 5, 5, 0, 0, 4, 6, 0, 2, 4, 0, 0, 0, 4, 7, 0, // 5x 2, 5, 5, 0, 0, 4, 6, 0, 2, 4, 0, 0, 0, 4, 7, 0, // 5x
6, 6, 0, 0, 0, 3, 5, 0, 4, 2, 2, 0, 5, 4, 6, 0, // 6x 6, 6, 0, 0, 0, 3, 5, 0, 4, 2, 2, 0, 5, 4, 6, 0, // 6x
2, 5, 5, 0, 0, 4, 6, 0, 2, 4, 0, 0, 0, 4, 7, 0, // 7x 2, 5, 5, 0, 0, 4, 6, 0, 2, 4, 0, 0, 6, 4, 7, 0, // 7x
0, 6, 0, 0, 3, 3, 3, 0, 2, 2, 2, 0, 4, 4, 4, 0, // 8x 0, 6, 0, 0, 3, 3, 3, 0, 2, 2, 2, 0, 4, 4, 4, 0, // 8x
2, 6, 5, 0, 4, 4, 4, 0, 2, 5, 2, 0, 0, 5, 0, 0, // 9x 2, 6, 5, 0, 4, 4, 4, 0, 2, 5, 2, 0, 0, 5, 0, 0, // 9x
2, 6, 2, 0, 3, 3, 3, 0, 2, 2, 2, 0, 4, 4, 4, 0, // Ax 2, 6, 2, 0, 3, 3, 3, 0, 2, 2, 2, 0, 4, 4, 4, 0, // Ax