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#if 0

#define TRACE_TXT(text) \
        { \
          if(dtlk_trace) \
          { \
            console_print(text); \
            console_print("\n"); \
          } \
        }

#define TRACE_CHR(chr) \
        { \
          if(dtlk_trace) \
            console_print(chr); \
        } \

#endif

#define DTLK_MINOR      0
#define DTLK_IO_EXTENT  0x02

        /* ioctl's use magic number of 0xa3 */
#define DTLK_INTERROGATE 0xa390 /* get settings from the DoubleTalk */
#define DTLK_STATUS 0xa391      /* get status from the DoubleTalk */


#define DTLK_CLEAR 0x18         /* stops speech */

#define DTLK_MAX_RETRIES (loops_per_jiffy/(10000/HZ))

        /* TTS Port Status Flags */
#define TTS_READABLE     0x80   /* mask for bit which is nonzero if a
                                   byte can be read from the TTS port */
#define TTS_SPEAKING     0x40   /* mask for SYNC bit, which is nonzero
                                   while DoubleTalk is producing
                                   output with TTS, PCM or CVSD
                                   synthesizers or tone generators
                                   (that is, all but LPC) */
#define TTS_SPEAKING2    0x20   /* mask for SYNC2 bit,
                                   which falls to zero up to 0.4 sec
                                   before speech stops */
#define TTS_WRITABLE     0x10   /* mask for RDY bit, which when set to
                                   1, indicates the TTS port is ready
                                   to accept a byte of data.  The RDY
                                   bit goes zero 2-3 usec after
                                   writing, and goes 1 again 180-190
                                   usec later. */
#define TTS_ALMOST_FULL  0x08   /* mask for AF bit: When set to 1,
                                   indicates that less than 300 free
                                   bytes are available in the TTS
                                   input buffer. AF is always 0 in the
                                   PCM, TGN and CVSD modes. */
#define TTS_ALMOST_EMPTY 0x04   /* mask for AE bit: When set to 1,
                                   indicates that less than 300 bytes
                                   of data remain in DoubleTalk's
                                   input (TTS or PCM) buffer. AE is
                                   always 1 in the TGN and CVSD
                                   modes. */

        /* LPC speak commands */
#define LPC_5220_NORMAL 0x60    /* 5220 format decoding table, normal rate */
#define LPC_5220_FAST 0x64      /* 5220 format decoding table, fast rate */
#define LPC_D6_NORMAL 0x20      /* D6 format decoding table, normal rate */
#define LPC_D6_FAST 0x24        /* D6 format decoding table, fast rate */

        /* LPC Port Status Flags (valid only after one of the LPC
           speak commands) */
#define LPC_SPEAKING     0x80   /* mask for TS bit: When set to 1,
                                   indicates the LPC synthesizer is
                                   producing speech.*/
#define LPC_BUFFER_LOW   0x40   /* mask for BL bit: When set to 1,
                                   indicates that the hardware LPC
                                   data buffer has less than 30 bytes
                                   remaining. (Total internal buffer
                                   size = 4096 bytes.) */
#define LPC_BUFFER_EMPTY 0x20   /* mask for BE bit: When set to 1,
                                   indicates that the LPC data buffer
                                   ran out of data (error condition if
                                   TS is also 1).  */

                                /* data returned by Interrogate command */
struct dtlk_settings
{
  unsigned short serial_number; /* 0-7Fh:0-7Fh */
  unsigned char rom_version[24]; /* null terminated string */
  unsigned char mode;           /* 0=Character; 1=Phoneme; 2=Text */
  unsigned char punc_level;     /* nB; 0-7 */
  unsigned char formant_freq;   /* nF; 0-9 */
  unsigned char pitch;          /* nP; 0-99 */
  unsigned char speed;          /* nS; 0-9 */
  unsigned char volume;         /* nV; 0-9 */
  unsigned char tone;           /* nX; 0-2 */
  unsigned char expression;     /* nE; 0-9 */
  unsigned char ext_dict_loaded; /* 1=exception dictionary loaded */
  unsigned char ext_dict_status; /* 1=exception dictionary enabled */
  unsigned char free_ram;       /* # pages (truncated) remaining for
                                   text buffer */
  unsigned char articulation;   /* nA; 0-9 */
  unsigned char reverb;         /* nR; 0-9 */
  unsigned char eob;            /* 7Fh value indicating end of
                                   parameter block */
  unsigned char has_indexing;   /* nonzero if indexing is implemented */
};