MSXCielTurbo.cc

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#include "MSXCielTurbo.hh"
#include "MSXCPU.hh"
#include "LedStatus.hh"
#include "serialize.hh"
 
namespace openmsx {
 
MSXCielTurbo::MSXCielTurbo(const DeviceConfig& config)
        : MSXDevice(config)
{
        reset(EmuTime::dummy());
}
 
void MSXCielTurbo::reset(EmuTime::param time)
{
        word port = 0; // dummy
        writeIO(port, 0, time);
}
 
byte MSXCielTurbo::readIO(word /*port*/, EmuTime::param /*time*/)
{
        return lastValue;
}
 
byte MSXCielTurbo::peekIO(word /*port*/, EmuTime::param /*time*/) const
{
        return lastValue;
}
 
void MSXCielTurbo::writeIO(word /*port*/, byte value, EmuTime::param /*time*/)
{
        lastValue = value;
        bool enabled = (value & 0x80) != 0;
        unsigned freq = 3579545;
        if (enabled) freq *= 2;
        getCPU().setZ80Freq(freq);
        getLedStatus().setLed(LedStatus::TURBO, enabled);
}
 
template<typename Archive>
void MSXCielTurbo::serialize(Archive& ar, unsigned /*version*/)
{
        ar.template serializeBase<MSXDevice>(*this);
 
        ar.serialize("value", lastValue);
        if constexpr (!Archive::IS_LOADER) {
                word port = 0; // dummy
                writeIO(port, lastValue, EmuTime::dummy());
        }
}
INSTANTIATE_SERIALIZE_METHODS(MSXCielTurbo);
REGISTER_MSXDEVICE(MSXCielTurbo, "CielTurbo");
 
} // namespace openmsx