bsnes/snes/dsp/misc.cpp

36 lines
714 B
C++
Executable File

#ifdef DSP_CPP
void DSP::misc_27() {
state.t_pmon = REG(pmon) & ~1; //voice 0 doesn't support PMON
}
void DSP::misc_28() {
state.t_non = REG(non);
state.t_eon = REG(eon);
state.t_dir = REG(dir);
}
void DSP::misc_29() {
state.every_other_sample ^= 1;
if(state.every_other_sample) {
state.new_kon &= ~state.kon; //clears KON 63 clocks after it was last read
}
}
void DSP::misc_30() {
if(state.every_other_sample) {
state.kon = state.new_kon;
state.t_koff = REG(koff);
}
counter_tick();
//noise
if(counter_poll(REG(flg) & 0x1f) == true) {
int feedback = (state.noise << 13) ^ (state.noise << 14);
state.noise = (feedback & 0x4000) ^ (state.noise >> 1);
}
}
#endif