UCHAR data_length;	} c_readdeleteddata;    struct c_readid 	{        UCHAR opcode;        UCHAR cbyte1;	} c_readid;    struct c_readtrack 	{        UCHAR opcode;        UCHAR cbyte1;        UCHAR track_number;        UCHAR drive_head_number;        UCHAR sector_number;        UCHAR bytes_per_sector;        UCHAR end_of_track_sector_number;        UCHAR intersector_gap_length;        UCHAR data_length;	} c_readtrack;    struct c_recalibrate 	{        UCHAR opcode;        UCHAR cbyte1;	} c_recalibrate;    struct c_relativeseek 	{        UCHAR opcode;        UCHAR cbyte1;	} c_relativeseek;    struct c_scanequal 	{        UCHAR opcode;        UCHAR cbyte1;        UCHAR track_number;        UCHAR drive_head_number;        UCHAR sector_number;        UCHAR bytes_per_sector;        UCHAR end_of_track_sector_number;        UCHAR intersector_gap_length;        UCHAR sector_step_size;	} c_scanequal;    struct c_scanhighorequal 	{        UCHAR opcode;        UCHAR cbyte1;        UCHAR track_number;        UCHAR drive_head_number;        UCHAR sector_number;        UCHAR bytes_per_sector;        UCHAR end_of_track_sector_number;        UCHAR intersector_gap_length;        UCHAR sector_step_size;	} c_scanhighorequal;    struct c_scanloworequal 	{        UCHAR opcode;        UCHAR cbyte1;        UCHAR track_number;        UCHAR drive_head_number;        UCHAR sector_number;        UCHAR bytes_per_sector;        UCHAR end_of_track_sector_number;        UCHAR intersector_gap_length;        UCHAR sector_step_size;	} c_scanloworequal;    struct c_seek 	{        UCHAR opcode;        UCHAR cbyte1;        UCHAR cbyte2;        UCHAR cbyte3;	} c_seek;    struct c_sensedrivestatus 	{        UCHAR opcode;        UCHAR cbyte1;	} c_sensedrivestatus;    struct c_senseinterrupt 	{        UCHAR opcode;	} c_senseinterrupt;    struct c_settrack 	{        UCHAR opcode;        UCHAR cbyte1;        UCHAR cbyte2;	} c_settrack;    struct c_specify 	{        UCHAR opcode;        UCHAR cbyte1;        UCHAR cbyte2;	} c_specify;    struct c_verify 	{        UCHAR opcode;        UCHAR cbyte1;        UCHAR track_number;        UCHAR drive_head_number;        UCHAR sector_number;        UCHAR bytes_per_sector;        UCHAR end_of_track_sector_number;        UCHAR intersector_gap_length;        UCHAR data_length_sector_count;	} c_verify;    struct c_version 	{        UCHAR opcode;	} c_version;    struct c_writedata 	{        UCHAR opcode;        UCHAR cbyte1;        UCHAR track_number;        UCHAR drive_head_number;        UCHAR sector_number;        UCHAR bytes_per_sector;        UCHAR end_of_track_sector_number;        UCHAR intersector_gap_length;        UCHAR data_length;	} c_writedata;    struct c_writedeleteddata 	{        UCHAR opcode;        UCHAR cbyte1;        UCHAR track_number;        UCHAR drive_head_number;        UCHAR sector_number;        UCHAR bytes_per_sector;        UCHAR end_of_track_sector_number;        UCHAR intersector_gap_length;        UCHAR data_length;	} c_writedeledteddata;    } FDC_COMMAND;/* result (result phase) structure definitions */typedef union fdc_result     {    struct r_justdata 	{        UCHAR databytes[32];	} r_justdata;    struct r_dumpreg 	{        UCHAR registers[10];	} r_dumpreg;    struct r_formattrack 	{        UCHAR status_register_0;        UCHAR status_register_1;        UCHAR status_register_2;        UCHAR track_number;        UCHAR head_number;        UCHAR sector_number;        UCHAR bytes_per_sector;	} r_formattrack;    struct r_lock 	{        UCHAR sbyte1;	} r_lock;    struct r_nsc 	{        UCHAR sbyte1;	} r_nsc;    struct r_readdata 	{        UCHAR status_register_0;        UCHAR status_register_1;        UCHAR status_register_2;        UCHAR track_number;        UCHAR head_number;        UCHAR sector_number;        UCHAR bytes_per_sector;	} r_readdata;    struct r_readdeleteddata 	{        UCHAR status_register_0;        UCHAR status_register_1;        UCHAR status_register_2;        UCHAR track_number;        UCHAR head_number;        UCHAR sector_number;        UCHAR bytes_per_sector;	} r_readdeleteddata;    struct r_readid 	{        UCHAR status_register_0;        UCHAR status_register_1;        UCHAR status_register_2;        UCHAR track_number;        UCHAR head_number;        UCHAR sector_number;        UCHAR bytes_per_sector;	} r_readid;    struct r_readtrack 	{        UCHAR status_register_0;        UCHAR status_register_1;        UCHAR status_register_2;        UCHAR track_number;        UCHAR head_number;        UCHAR sector_number;        UCHAR bytes_per_sector;	} r_readtrack;    struct r_scanequal 	{        UCHAR status_register_0;        UCHAR status_register_1;        UCHAR status_register_2;        UCHAR track_number;        UCHAR head_number;        UCHAR sector_number;        UCHAR bytes_per_sector;	} r_scanequal;    struct r_scanhighorequal 	{        UCHAR status_register_0;        UCHAR status_register_1;        UCHAR status_register_2;        UCHAR track_number;        UCHAR head_number;        UCHAR sector_number;        UCHAR bytes_per_sector;	} r_scanhighorequal;    struct r_scanloworequal 	{        UCHAR status_register_0;        UCHAR status_register_1;        UCHAR status_register_2;        UCHAR track_number;        UCHAR head_number;        UCHAR sector_number;        UCHAR bytes_per_sector;	} r_scanloworequal;    struct r_seek 	{        UCHAR opcode;        UCHAR cbyte1;        UCHAR cbyte2;        UCHAR cbyte3;	} r_seek;    struct r_sensedrivestatus 	{        UCHAR status_register_3;	} r_sensedrivestatus;    struct r_senseinterrupt 	{        UCHAR status_register_0;        UCHAR present_track_number;        UCHAR msnofptr;	} r_senseinterrupt;    struct r_settrack 	{        UCHAR value;	} r_settrack;    struct r_verify 	{        UCHAR status_register_0;        UCHAR status_register_1;        UCHAR status_register_2;        UCHAR track_number;        UCHAR head_number;        UCHAR sector_number;        UCHAR bytes_per_sector;	} r_verify;    struct r_version 	{        UCHAR sbyte1;	} r_version;    struct r_writedata 	{        UCHAR status_register_0;        UCHAR status_register_1;        UCHAR status_register_2;        UCHAR track_number;        UCHAR head_number;        UCHAR sector_number;        UCHAR bytes_per_sector;	} r_writedata;    struct r_writedeleteddata 	{        UCHAR status_register_0;        UCHAR status_register_1;        UCHAR status_register_2;        UCHAR track_number;        UCHAR head_number;        UCHAR sector_number;        UCHAR bytes_per_sector;	} r_writedeledteddata;    } FDC_RESULT;/* register map structure template definition */typedef struct fdc     {    UCHAR sra;		/* status register A */    UCHAR srb;		/* status register B */    UCHAR dor;		/* digital output register */    UCHAR tdr;		/* tape drive register */    UCHAR msr_dsr;	/* main-status/data-rate-select register */    UCHAR fifo;		/* data register (FIFO) */    UCHAR none;		/* none (bus tristate) */    UCHAR dir_ccr;	/* digital-input/configuration-control register */    } FDC;#ifdef __cplusplus}#endif#endif  /* INCfdch */