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◆ main openmsx / src / MSXCielTurbo.cc
1.2 KiB · C++ · last changed chore(): initial commit 1 month ago source blame history raw
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#include "MSXCielTurbo.hh"
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#include "LedStatus.hh"
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#include "MSXCPU.hh"
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#include "serialize.hh"
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namespace openmsx {
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MSXCielTurbo::MSXCielTurbo(const DeviceConfig& config)
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	: MSXDevice(config)
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{
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	reset(EmuTime::dummy());
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}
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void MSXCielTurbo::reset(EmuTime time)
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{
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	uint16_t port = 0; // dummy
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	writeIO(port, 0, time);
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}
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byte MSXCielTurbo::readIO(uint16_t /*port*/, EmuTime /*time*/)
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{
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	return lastValue;
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}
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byte MSXCielTurbo::peekIO(uint16_t /*port*/, EmuTime /*time*/) const
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{
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	return lastValue;
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}
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void MSXCielTurbo::writeIO(uint16_t /*port*/, byte value, EmuTime /*time*/)
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{
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	lastValue = value;
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	bool enabled = (value & 0x80) != 0;
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	unsigned freq = 3579545;
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	if (enabled) freq *= 2;
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	getCPU().setZ80Freq(freq);
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	getLedStatus().setLed(LedStatus::TURBO, enabled);
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}
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template<typename Archive>
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void MSXCielTurbo::serialize(Archive& ar, unsigned /*version*/)
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{
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	ar.template serializeBase<MSXDevice>(*this);
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	ar.serialize("value", lastValue);
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	if constexpr (!Archive::IS_LOADER) {
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		uint16_t port = 0; // dummy
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		writeIO(port, lastValue, EmuTime::dummy());
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	}
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}
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INSTANTIATE_SERIALIZE_METHODS(MSXCielTurbo);
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REGISTER_MSXDEVICE(MSXCielTurbo, "CielTurbo");
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} // namespace openmsx