mirror of
https://github.com/bsnes-emu/bsnes.git
synced 2025-10-05 00:01:56 +02:00
78d49d3873
byuu says: Changelog: - int_t<bits> replaced with Integer<bits> - uint_t<bits> replaced with Natural<bits> - fixed "Synchronize Audio" menu option that broke recently - all of sfc/performance ported to "auto function() -> return;" syntax With this WIP, all of higan is finally ported over to the new function declaration syntax. Thank the gods. There's still going to be periodic disruption for diffs from porting over signed->int, unsigned->uint, and whatever we come up with for the new Natural<> and Integer<> classes. But the worst of it's behind us now.
116 lines
3.3 KiB
C++
116 lines
3.3 KiB
C++
auto CPU::queue_event(uint id) -> void {
|
|
switch(id) {
|
|
case QueueEvent::DramRefresh: return add_clocks(40);
|
|
case QueueEvent::HdmaRun: return hdma_run();
|
|
}
|
|
}
|
|
|
|
auto CPU::last_cycle() -> void {
|
|
if(status.irq_lock) {
|
|
status.irq_lock = false;
|
|
return;
|
|
}
|
|
|
|
if(status.nmi_transition) {
|
|
regs.wai = false;
|
|
status.nmi_transition = false;
|
|
status.nmi_pending = true;
|
|
}
|
|
|
|
if(status.irq_transition || regs.irq) {
|
|
regs.wai = false;
|
|
status.irq_transition = false;
|
|
status.irq_pending = !regs.p.i;
|
|
}
|
|
}
|
|
|
|
auto CPU::add_clocks(uint clocks) -> void {
|
|
if(status.hirq_enabled) {
|
|
if(status.virq_enabled) {
|
|
uint cpu_time = vcounter() * 1364 + hcounter();
|
|
uint irq_time = status.vtime * 1364 + status.htime * 4;
|
|
uint framelines = (system.region() == System::Region::NTSC ? 262 : 312) + (ppu.interlace() && !field());
|
|
if(cpu_time > irq_time) irq_time += framelines * 1364;
|
|
bool irq_valid = status.irq_valid;
|
|
status.irq_valid = cpu_time <= irq_time && cpu_time + clocks > irq_time;
|
|
if(!irq_valid && status.irq_valid) status.irq_line = true;
|
|
} else {
|
|
uint irq_time = status.htime * 4;
|
|
if(hcounter() > irq_time) irq_time += 1364;
|
|
bool irq_valid = status.irq_valid;
|
|
status.irq_valid = hcounter() <= irq_time && hcounter() + clocks > irq_time;
|
|
if(!irq_valid && status.irq_valid) status.irq_line = true;
|
|
}
|
|
if(status.irq_line) status.irq_transition = true;
|
|
} else if(status.virq_enabled) {
|
|
bool irq_valid = status.irq_valid;
|
|
status.irq_valid = vcounter() == status.vtime;
|
|
if(!irq_valid && status.irq_valid) status.irq_line = true;
|
|
if(status.irq_line) status.irq_transition = true;
|
|
} else {
|
|
status.irq_valid = false;
|
|
}
|
|
|
|
tick(clocks);
|
|
queue.tick(clocks);
|
|
step(clocks);
|
|
}
|
|
|
|
auto CPU::scanline() -> void {
|
|
synchronizeSMP();
|
|
synchronizePPU();
|
|
synchronizeCoprocessors();
|
|
system.scanline();
|
|
|
|
if(vcounter() == 0) hdma_init();
|
|
|
|
queue.enqueue(534, QueueEvent::DramRefresh);
|
|
|
|
if(vcounter() <= (ppu.overscan() == false ? 224 : 239)) {
|
|
queue.enqueue(1104 + 8, QueueEvent::HdmaRun);
|
|
}
|
|
|
|
bool nmi_valid = status.nmi_valid;
|
|
status.nmi_valid = vcounter() >= (ppu.overscan() == false ? 225 : 240);
|
|
if(!nmi_valid && status.nmi_valid) {
|
|
status.nmi_line = true;
|
|
if(status.nmi_enabled) status.nmi_transition = true;
|
|
} else if(nmi_valid && !status.nmi_valid) {
|
|
status.nmi_line = false;
|
|
}
|
|
|
|
if(status.auto_joypad_poll_enabled && vcounter() == (ppu.overscan() == false ? 227 : 242)) {
|
|
run_auto_joypad_poll();
|
|
}
|
|
}
|
|
|
|
auto CPU::run_auto_joypad_poll() -> void {
|
|
device.controllerPort1->latch(1);
|
|
device.controllerPort2->latch(1);
|
|
device.controllerPort1->latch(0);
|
|
device.controllerPort2->latch(0);
|
|
|
|
uint16 joy1 = 0, joy2 = 0, joy3 = 0, joy4 = 0;
|
|
for(uint i = 0; i < 16; i++) {
|
|
uint8 port0 = device.controllerPort1->data();
|
|
uint8 port1 = device.controllerPort2->data();
|
|
|
|
joy1 |= (port0 & 1) ? (0x8000 >> i) : 0;
|
|
joy2 |= (port1 & 1) ? (0x8000 >> i) : 0;
|
|
joy3 |= (port0 & 2) ? (0x8000 >> i) : 0;
|
|
joy4 |= (port1 & 2) ? (0x8000 >> i) : 0;
|
|
}
|
|
|
|
status.joy1l = joy1;
|
|
status.joy1h = joy1 >> 8;
|
|
|
|
status.joy2l = joy2;
|
|
status.joy2h = joy2 >> 8;
|
|
|
|
status.joy3l = joy3;
|
|
status.joy3h = joy3 >> 8;
|
|
|
|
status.joy4l = joy4;
|
|
status.joy4h = joy4 >> 8;
|
|
}
|