mirror of https://github.com/bsnes-emu/bsnes.git
28 lines
1.0 KiB
C++
28 lines
1.0 KiB
C++
//called every 256 clocks; see CPU::addClocks()
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auto CPU::stepAutoJoypadPoll() -> void {
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if(vcounter() >= ppu.vdisp()) {
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//cache enable state at first iteration
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if(status.autoJoypadCounter == 0) status.autoJoypadLatch = status.autoJoypadPoll;
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status.autoJoypadActive = status.autoJoypadCounter <= 15;
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if(status.autoJoypadActive && status.autoJoypadLatch) {
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if(status.autoJoypadCounter == 0) {
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SuperFamicom::peripherals.controllerPort1->latch(1);
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SuperFamicom::peripherals.controllerPort2->latch(1);
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SuperFamicom::peripherals.controllerPort1->latch(0);
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SuperFamicom::peripherals.controllerPort2->latch(0);
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}
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uint2 port0 = SuperFamicom::peripherals.controllerPort1->data();
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uint2 port1 = SuperFamicom::peripherals.controllerPort2->data();
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status.joy1 = status.joy1 << 1 | port0.bit(0);
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status.joy2 = status.joy2 << 1 | port1.bit(0);
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status.joy3 = status.joy3 << 1 | port0.bit(1);
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status.joy4 = status.joy4 << 1 | port1.bit(1);
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}
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status.autoJoypadCounter++;
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}
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}
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