GoudaSCSI.cc

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#include "GoudaSCSI.hh"
#include "serialize.hh"
#include "unreachable.hh"
 
namespace openmsx {
 
GoudaSCSI::GoudaSCSI(const DeviceConfig& config)
        : MSXDevice(config)
        , rom(getName() + " ROM", "rom", config)
        , wd33c93(config)
{
        reset(EmuTime::dummy());
}
 
void GoudaSCSI::reset(EmuTime::param /*time*/)
{
        wd33c93.reset(true);
}
 
byte GoudaSCSI::readIO(word port, EmuTime::param /*time*/)
{
        switch (port & 0x03) {
        case 0:
                return wd33c93.readAuxStatus();
        case 1:
                return wd33c93.readCtrl();
        case 2:
                return 0xb0; // bit 4: 1 = Halt on SCSI parity error
        default:
                UNREACHABLE;
        }
}
 
byte GoudaSCSI::peekIO(word port, EmuTime::param /*time*/) const
{
        switch (port & 0x03) {
        case 0:
                return wd33c93.peekAuxStatus();
        case 1:
                return wd33c93.peekCtrl();
        case 2:
                return 0xb0; // bit 4: 1 = Halt on SCSI parity error
        default:
                UNREACHABLE;
        }
}
 
void GoudaSCSI::writeIO(word port, byte value, EmuTime::param time)
{
        switch (port & 0x03) {
        case 0:
                wd33c93.writeAdr(value);
                break;
        case 1:
                wd33c93.writeCtrl(value);
                break;
        case 2:
                reset(time);
                break;
        default:
                UNREACHABLE;
        }
}
 
byte GoudaSCSI::readMem(word address, EmuTime::param /*time*/)
{
        return *GoudaSCSI::getReadCacheLine(address);
}
 
const byte* GoudaSCSI::getReadCacheLine(word start) const
{
        return &rom[start & (rom.size() - 1)];
}
 
 
template<typename Archive>
void GoudaSCSI::serialize(Archive& ar, unsigned /*version*/)
{
        ar.template serializeBase<MSXDevice>(*this);
        ar.serialize("WD33C93", wd33c93);
}
INSTANTIATE_SERIALIZE_METHODS(GoudaSCSI);
REGISTER_MSXDEVICE(GoudaSCSI, "GoudaSCSI");
 
} // namespace openmsx