snes9x/apu/bapu/smp/core/oppseudo_rmw.cpp

263 lines
3.8 KiB
C++

case 0xbc: {
op_io();
regs.B.a = op_inc(regs.B.a);
break;
}
case 0x3d: {
op_io();
regs.x = op_inc(regs.x);
break;
}
case 0xfc: {
op_io();
regs.B.y = op_inc(regs.B.y);
break;
}
case 0x9c: {
op_io();
regs.B.a = op_dec(regs.B.a);
break;
}
case 0x1d: {
op_io();
regs.x = op_dec(regs.x);
break;
}
case 0xdc: {
op_io();
regs.B.y = op_dec(regs.B.y);
break;
}
case 0x1c: {
op_io();
regs.B.a = op_asl(regs.B.a);
break;
}
case 0x5c: {
op_io();
regs.B.a = op_lsr(regs.B.a);
break;
}
case 0x3c: {
op_io();
regs.B.a = op_rol(regs.B.a);
break;
}
case 0x7c: {
op_io();
regs.B.a = op_ror(regs.B.a);
break;
}
case 0xab: {
dp = op_readpc();
rd = op_readdp(dp);
rd = op_inc(rd);
op_writedp(dp, rd);
break;
}
case 0x8b: {
dp = op_readpc();
rd = op_readdp(dp);
rd = op_dec(rd);
op_writedp(dp, rd);
break;
}
case 0x0b: {
dp = op_readpc();
rd = op_readdp(dp);
rd = op_asl(rd);
op_writedp(dp, rd);
break;
}
case 0x4b: {
dp = op_readpc();
rd = op_readdp(dp);
rd = op_lsr(rd);
op_writedp(dp, rd);
break;
}
case 0x2b: {
dp = op_readpc();
rd = op_readdp(dp);
rd = op_rol(rd);
op_writedp(dp, rd);
break;
}
case 0x6b: {
dp = op_readpc();
rd = op_readdp(dp);
rd = op_ror(rd);
op_writedp(dp, rd);
break;
}
case 0xbb: {
dp = op_readpc();
op_io();
rd = op_readdp(dp + regs.x);
rd = op_inc(rd);
op_writedp(dp + regs.x, rd);
break;
}
case 0x9b: {
dp = op_readpc();
op_io();
rd = op_readdp(dp + regs.x);
rd = op_dec(rd);
op_writedp(dp + regs.x, rd);
break;
}
case 0x1b: {
dp = op_readpc();
op_io();
rd = op_readdp(dp + regs.x);
rd = op_asl(rd);
op_writedp(dp + regs.x, rd);
break;
}
case 0x5b: {
dp = op_readpc();
op_io();
rd = op_readdp(dp + regs.x);
rd = op_lsr(rd);
op_writedp(dp + regs.x, rd);
break;
}
case 0x3b: {
dp = op_readpc();
op_io();
rd = op_readdp(dp + regs.x);
rd = op_rol(rd);
op_writedp(dp + regs.x, rd);
break;
}
case 0x7b: {
dp = op_readpc();
op_io();
rd = op_readdp(dp + regs.x);
rd = op_ror(rd);
op_writedp(dp + regs.x, rd);
break;
}
case 0xac: {
dp = op_readpc();
dp |= op_readpc() << 8;
rd = op_readaddr(dp);
rd = op_inc(rd);
op_writeaddr(dp, rd);
break;
}
case 0x8c: {
dp = op_readpc();
dp |= op_readpc() << 8;
rd = op_readaddr(dp);
rd = op_dec(rd);
op_writeaddr(dp, rd);
break;
}
case 0x0c: {
dp = op_readpc();
dp |= op_readpc() << 8;
rd = op_readaddr(dp);
rd = op_asl(rd);
op_writeaddr(dp, rd);
break;
}
case 0x4c: {
dp = op_readpc();
dp |= op_readpc() << 8;
rd = op_readaddr(dp);
rd = op_lsr(rd);
op_writeaddr(dp, rd);
break;
}
case 0x2c: {
dp = op_readpc();
dp |= op_readpc() << 8;
rd = op_readaddr(dp);
rd = op_rol(rd);
op_writeaddr(dp, rd);
break;
}
case 0x6c: {
dp = op_readpc();
dp |= op_readpc() << 8;
rd = op_readaddr(dp);
rd = op_ror(rd);
op_writeaddr(dp, rd);
break;
}
case 0x0e: {
dp = op_readpc();
dp |= op_readpc() << 8;
rd = op_readaddr(dp);
regs.p.n = !!((regs.B.a - rd) & 0x80);
regs.p.z = ((regs.B.a - rd) == 0);
op_readaddr(dp);
op_writeaddr(dp, rd | regs.B.a);
break;
}
case 0x4e: {
dp = op_readpc();
dp |= op_readpc() << 8;
rd = op_readaddr(dp);
regs.p.n = !!((regs.B.a - rd) & 0x80);
regs.p.z = ((regs.B.a - rd) == 0);
op_readaddr(dp);
op_writeaddr(dp, rd &~ regs.B.a);
break;
}
case 0x3a: {
dp = op_readpc();
rd = op_readdp(dp);
rd++;
op_writedp(dp++, rd);
rd += op_readdp(dp) << 8;
op_writedp(dp, rd >> 8);
regs.p.n = !!(rd & 0x8000);
regs.p.z = (rd == 0);
break;
}
case 0x1a: {
dp = op_readpc();
rd = op_readdp(dp);
rd--;
op_writedp(dp++, rd);
rd += op_readdp(dp) << 8;
op_writedp(dp, rd >> 8);
regs.p.n = !!(rd & 0x8000);
regs.p.z = (rd == 0);
break;
}