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◆ main openmsx / src / MSXTurboRPause.cc
2.0 KiB · C++ · last changed chore(): initial commit 1 month ago source blame history raw
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#include "MSXTurboRPause.hh"
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#include "LedStatus.hh"
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#include "MSXMotherBoard.hh"
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#include "serialize.hh"
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namespace openmsx {
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MSXTurboRPause::MSXTurboRPause(const DeviceConfig& config)
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	: MSXDevice(config)
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	, pauseSetting(
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		getCommandController(), "turborpause",
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		"status of the TurboR pause", false)
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{
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	pauseSetting.attach(*this);
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	reset(EmuTime::dummy());
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}
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MSXTurboRPause::~MSXTurboRPause()
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{
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	powerDown(EmuTime::dummy());
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	pauseSetting.detach(*this);
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}
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void MSXTurboRPause::powerDown(EmuTime time)
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{
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	writeIO(0, 0, time); // send LED OFF events (if needed)
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}
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void MSXTurboRPause::reset(EmuTime time)
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{
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	pauseSetting.setBoolean(false);
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	writeIO(0, 0, time);
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}
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byte MSXTurboRPause::readIO(uint16_t port, EmuTime time)
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{
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	return peekIO(port, time);
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}
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byte MSXTurboRPause::peekIO(uint16_t /*port*/, EmuTime /*time*/) const
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{
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	return pauseSetting.getBoolean() ? 1 : 0;
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}
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void MSXTurboRPause::writeIO(uint16_t /*port*/, byte value, EmuTime /*time*/)
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{
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	status = value;
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	if (bool newTurboLed = (status & 0x80) != 0;
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	    newTurboLed != turboLed) {
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		turboLed = newTurboLed;
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		getLedStatus().setLed(LedStatus::TURBO, turboLed);
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	}
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	updatePause();
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}
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void MSXTurboRPause::update(const Setting& /*setting*/) noexcept
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{
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	updatePause();
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}
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void MSXTurboRPause::updatePause()
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{
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	if (bool newHwPause = (status & 0x02) && pauseSetting.getBoolean();
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	    newHwPause != hwPause) {
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		hwPause = newHwPause;
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		if (hwPause) {
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			getMotherBoard().pause();
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		} else {
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			getMotherBoard().unpause();
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		}
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	}
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	bool newPauseLed = (status & 0x01) || hwPause;
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	if (newPauseLed != pauseLed) {
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		pauseLed = newPauseLed;
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		getLedStatus().setLed(LedStatus::PAUSE, pauseLed);
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	}
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}
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template<typename Archive>
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void MSXTurboRPause::serialize(Archive& ar, unsigned /*version*/)
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{
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	ar.template serializeBase<MSXDevice>(*this);
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	ar.serialize("status", status);
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	if constexpr (Archive::IS_LOADER) {
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		writeIO(0, status, EmuTime::dummy());
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	}
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}
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INSTANTIATE_SERIALIZE_METHODS(MSXTurboRPause);
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REGISTER_MSXDEVICE(MSXTurboRPause, "TurboRPause");
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} // namespace openmsx