mirror of https://github.com/bsnes-emu/bsnes.git
28 lines
993 B
C++
28 lines
993 B
C++
//called every 256 clocks; see CPU::addClocks()
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auto CPU::stepAutoJoypadPoll() -> void {
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if(vcounter() >= (!ppu.overscan() ? 225 : 240)) {
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//cache enable state at first iteration
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if(status.auto_joypad_counter == 0) status.auto_joypad_latch = status.auto_joypad_poll;
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status.auto_joypad_active = status.auto_joypad_counter <= 15;
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if(status.auto_joypad_active && status.auto_joypad_latch) {
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if(status.auto_joypad_counter == 0) {
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device.controllerPort1->latch(1);
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device.controllerPort2->latch(1);
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device.controllerPort1->latch(0);
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device.controllerPort2->latch(0);
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}
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uint2 port0 = device.controllerPort1->data();
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uint2 port1 = device.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.auto_joypad_counter++;
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}
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}
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