DiskDrive.hh

Go to the documentation of this file.

#ifndef DISKDRIVE_HH
#define DISKDRIVE_HH
 
#include "EmuTime.hh"
#include "RawTrack.hh"
 
namespace openmsx {
 
class DiskDrive
{
public:
        enum class TrackMode {
                NORMAL, YAMAHA_FD_03,
        };
 
public:
        static constexpr unsigned ROTATIONS_PER_SECOND = 5; // 300rpm
 
        virtual ~DiskDrive() = default;
 
        [[nodiscard]] virtual bool isDiskInserted() const = 0;
 
        [[nodiscard]] virtual bool isWriteProtected() const = 0;
 
        [[nodiscard]] virtual bool isDoubleSided() = 0;
 
        [[nodiscard]] virtual bool isTrack00() const = 0;
 
        virtual void setSide(bool side) = 0;
 
        /* Returns the previously selected side.
         */
        [[nodiscard]] virtual bool getSide() const = 0;
 
        virtual void step(bool direction, EmuTime::param time) = 0;
 
        virtual void setMotor(bool status, EmuTime::param time) = 0;
 
        [[nodiscard]] virtual bool getMotor() const = 0;
 
        [[nodiscard]] virtual bool indexPulse(EmuTime::param time) = 0;
 
        [[nodiscard]] virtual EmuTime getTimeTillIndexPulse(EmuTime::param time, int count = 1) = 0;
 
        [[nodiscard]] virtual unsigned getTrackLength() = 0;
        virtual void writeTrackByte(int idx, uint8_t val, bool addIdam = false) = 0;
        [[nodiscard]] virtual uint8_t readTrackByte(int idx) = 0;
        virtual EmuTime getNextSector(EmuTime::param time, RawTrack::Sector& sector) = 0;
        virtual void flushTrack() = 0;
 
        virtual bool diskChanged() = 0;           // read and reset
        [[nodiscard]] virtual bool peekDiskChanged() const = 0; // read without reset
 
        [[nodiscard]] virtual bool isDummyDrive() const = 0;
 
        virtual void applyWd2793ReadTrackQuirk() = 0;
        virtual void invalidateWd2793ReadTrackQuirk() = 0;
};
 
 
class DummyDrive final : public DiskDrive
{
public:
        [[nodiscard]] bool isDiskInserted() const override;
        [[nodiscard]] bool isWriteProtected() const override;
        [[nodiscard]] bool isDoubleSided() override;
        [[nodiscard]] bool isTrack00() const override;
        void setSide(bool side) override;
        [[nodiscard]] bool getSide() const override;
        void step(bool direction, EmuTime::param time) override;
        void setMotor(bool status, EmuTime::param time) override;
        [[nodiscard]] bool getMotor() const override;
        [[nodiscard]] bool indexPulse(EmuTime::param time) override;
        [[nodiscard]] EmuTime getTimeTillIndexPulse(EmuTime::param time, int count) override;
        [[nodiscard]] unsigned getTrackLength() override;
        void writeTrackByte(int idx, uint8_t val, bool addIdam) override;
        [[nodiscard]] uint8_t readTrackByte(int idx) override;
        EmuTime getNextSector(EmuTime::param time, RawTrack::Sector& sector) override;
        void flushTrack() override;
        bool diskChanged() override;
        [[nodiscard]] bool peekDiskChanged() const override;
        [[nodiscard]] bool isDummyDrive() const override;
        void applyWd2793ReadTrackQuirk() override;
        void invalidateWd2793ReadTrackQuirk() override;
};
 
} // namespace openmsx
 
#endif