bsnes/higan/processor/v30mz/instructions-flag.cpp

29 lines
426 B
C++

//9e sahf
auto V30MZ::opStoreFlagsAcc() {
wait(3);
r.f = (r.f & 0xff00) | r.ah;
}
//9f lahf
auto V30MZ::opLoadAccFlags() {
wait(1);
r.ah = (r.f & 0x00ff);
}
//f5 cmc
auto V30MZ::opComplementCarry() {
wait(3);
r.f.c = !r.f.c;
}
auto V30MZ::opClearFlag(uint bit) {
wait(3);
r.f &= ~(1 << bit);
}
auto V30MZ::opSetFlag(uint bit) {
wait(3);
r.f |= 1 << bit;
if(bit == r.f.i.bit) state.poll = false;
}