Apple-2-Tools/bradgrantham-apple2e
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implement 0xB2, LDA(zp)

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Brad Grantham 2018-07-31 13:42:09 -07:00
parent 992864d5a0
commit bdcf50f890
1 changed files with 8 additions and 1 deletions
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9
apple2e.cpp
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@ -1086,7 +1086,7 @@ struct CPU6502
/* 0x8- */ 2, 6, -1, -1, 3, 3, 3, -1, 2, -1, 2, -1, 4, 4, 4, -1,
/* 0x9- */ 2, 6, 5, -1, 4, 4, 4, -1, 2, 5, 2, -1, -1, 5, -1, -1,
/* 0xA- */ 2, 6, 2, -1, 3, 3, 3, -1, 2, 2, 2, -1, 4, 4, 4, -1,
/* 0xB- */ 2, 5, -1, -1, 4, 4, 4, -1, 2, 4, 2, -1, 4, 4, 4, -1,
/* 0xB- */ 2, 5, 5, -1, 4, 4, 4, -1, 2, 4, 2, -1, 4, 4, 4, -1,
/* 0xC- */ 2, 6, -1, -1, 3, 3, 5, -1, 2, 2, 2, -1, 4, 4, 3, -1,
/* 0xD- */ 2, 5, -1, -1, -1, 4, 6, -1, 2, 4, -1, -1, -1, 4, 7, -1,
/* 0xE- */ 2, 6, -1, -1, 3, 3, 5, -1, 2, 2, 2, -1, 4, 4, 6, -1,
@ -2364,6 +2364,13 @@ struct CPU6502
break;
}
case 0xB2: { // LDA (zpg), 65C02 instruction
unsigned char zpg = read_pc_inc(bus);
int addr = bus.read(zpg) + bus.read((zpg + 1) & 0xFF) * 256;
set_flags(N | Z, a = bus.read(addr));
break;
}
case 0x92: { // STA (zpg), 65C02 instruction
unsigned char zpg = read_pc_inc(bus);
int addr = bus.read(zpg) + bus.read((zpg + 1) & 0xFF) * 256;