mirror of https://github.com/bsnes-emu/bsnes.git
108 lines
2.2 KiB
C++
108 lines
2.2 KiB
C++
auto V30MZ::opInString(Size size) {
|
|
wait(5);
|
|
if(!repeat() || r.cx) {
|
|
auto data = in(size, r.dx);
|
|
write(size, r.es, r.di, data);
|
|
r.di += r.f.d ? -size : size;
|
|
|
|
if(!repeat() || !--r.cx) return;
|
|
|
|
state.prefix = true;
|
|
r.ip--;
|
|
}
|
|
}
|
|
|
|
auto V30MZ::opOutString(Size size) {
|
|
wait(6);
|
|
if(!repeat() || r.cx) {
|
|
auto data = read(size, segment(r.ds), r.si);
|
|
out(size, r.dx, data);
|
|
r.si += r.f.d ? -size : size;
|
|
|
|
if(!repeat() || !--r.cx) return;
|
|
|
|
state.prefix = true;
|
|
r.ip--;
|
|
}
|
|
}
|
|
|
|
auto V30MZ::opMoveString(Size size) {
|
|
wait(4);
|
|
if(!repeat() || r.cx) {
|
|
auto data = read(size, segment(r.ds), r.si);
|
|
write(size, r.es, r.di, data);
|
|
r.si += r.f.d ? -size : size;
|
|
r.di += r.f.d ? -size : size;
|
|
|
|
if(!repeat() || !--r.cx) return;
|
|
|
|
state.prefix = true;
|
|
r.ip--;
|
|
}
|
|
}
|
|
|
|
auto V30MZ::opCompareString(Size size) {
|
|
wait(5);
|
|
if(!repeat() || r.cx) {
|
|
auto x = read(size, segment(r.ds), r.si);
|
|
auto y = read(size, r.es, r.di);
|
|
r.si += r.f.d ? -size : size;
|
|
r.di += r.f.d ? -size : size;
|
|
alSub(size, x, y);
|
|
|
|
if(!repeat() || !--r.cx) return;
|
|
if(repeat() == RepeatWhileZero && r.f.z == 0) return;
|
|
if(repeat() == RepeatWhileNotZero && r.f.z == 1) return;
|
|
|
|
state.prefix = true;
|
|
r.ip--;
|
|
}
|
|
}
|
|
|
|
auto V30MZ::opStoreString(Size size) {
|
|
wait(2);
|
|
if(!repeat() || r.cx) {
|
|
write(size, r.es, r.di, getAcc(size));
|
|
r.di += r.f.d ? -size : size;
|
|
|
|
if(!repeat() || !--r.cx) return;
|
|
|
|
state.prefix = true;
|
|
r.ip--;
|
|
}
|
|
}
|
|
|
|
//ac lodsb
|
|
//ad lodsw
|
|
auto V30MZ::opLoadString(Size size) {
|
|
wait(2);
|
|
if(!repeat() || r.cx) {
|
|
setAcc(size, read(size, segment(r.ds), r.si));
|
|
r.si += r.f.d ? -size : size;
|
|
|
|
if(!repeat() || !--r.cx) return;
|
|
|
|
state.prefix = true;
|
|
r.ip--;
|
|
}
|
|
}
|
|
|
|
//ae scasb
|
|
//af scasw
|
|
auto V30MZ::opScanString(Size size) {
|
|
wait(3);
|
|
if(!repeat() || r.cx) {
|
|
auto x = getAcc(size);
|
|
auto y = read(size, r.es, r.di);
|
|
r.di += r.f.d ? -size : size;
|
|
alSub(size, x, y);
|
|
|
|
if(!repeat() || !--r.cx) return;
|
|
if(repeat() == RepeatWhileZero && r.f.z == 0) return;
|
|
if(repeat() == RepeatWhileNotZero && r.f.z == 1) return;
|
|
|
|
state.prefix = true;
|
|
r.ip--;
|
|
}
|
|
}
|