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◆ main openmsx / src / ide / GoudaSCSI.cc
1.6 KiB · C++ · last changed chore(): initial commit 1 month ago source blame history raw
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#include "GoudaSCSI.hh"
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#include "serialize.hh"
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#include "unreachable.hh"
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namespace openmsx {
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GoudaSCSI::GoudaSCSI(DeviceConfig& config)
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	: MSXDevice(config)
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	, rom(getName() + " ROM", "rom", config)
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	, wd33c93(config)
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{
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	reset(EmuTime::dummy());
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}
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void GoudaSCSI::reset(EmuTime /*time*/)
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{
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	wd33c93.reset(true);
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}
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byte GoudaSCSI::readIO(uint16_t port, EmuTime /*time*/)
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{
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	switch (port & 0x03) {
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	case 0:
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		return wd33c93.readAuxStatus();
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	case 1:
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		return wd33c93.readCtrl();
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	case 2:
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		return 0xb0; // bit 4: 1 = Halt on SCSI parity error
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	default:
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		UNREACHABLE;
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	}
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}
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byte GoudaSCSI::peekIO(uint16_t port, EmuTime /*time*/) const
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{
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	switch (port & 0x03) {
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	case 0:
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		return wd33c93.peekAuxStatus();
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	case 1:
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		return wd33c93.peekCtrl();
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	case 2:
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		return 0xb0; // bit 4: 1 = Halt on SCSI parity error
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	default:
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		UNREACHABLE;
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	}
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}
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void GoudaSCSI::writeIO(uint16_t port, byte value, EmuTime time)
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{
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	switch (port & 0x03) {
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	case 0:
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		wd33c93.writeAdr(value);
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		break;
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	case 1:
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		wd33c93.writeCtrl(value);
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		break;
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	case 2:
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		reset(time);
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		break;
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	default:
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		UNREACHABLE;
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	}
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}
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byte GoudaSCSI::readMem(uint16_t address, EmuTime /*time*/)
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{
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	return *GoudaSCSI::getReadCacheLine(address);
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}
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const byte* GoudaSCSI::getReadCacheLine(uint16_t start) const
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{
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	return &rom[start & (rom.size() - 1)];
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}
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template<typename Archive>
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void GoudaSCSI::serialize(Archive& ar, unsigned /*version*/)
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{
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	ar.template serializeBase<MSXDevice>(*this);
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	ar.serialize("WD33C93", wd33c93);
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}
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INSTANTIATE_SERIALIZE_METHODS(GoudaSCSI);
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REGISTER_MSXDEVICE(GoudaSCSI, "GoudaSCSI");
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} // namespace openmsx