speakup_acnt.h

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/* speakup_acntpc.h - header file for speakups Accent-PC driver. */

#define SYNTH_IO_EXTENT 0x02

#define SYNTH_CLEAR 0x18        /* stops speech */

    /* Port Status Flags */
#define SYNTH_READABLE  0x01    /* mask for bit which is nonzero if a
                   byte can be read from the data port */
#define SYNTH_WRITABLE  0x02    /* mask for RDY bit, which when set to
                   1, indicates the data port is ready
                   to accept a byte of data. */
#define SYNTH_QUIET 'S' /* synth is not speaking */
#define SYNTH_FULL  'F' /* synth is full. */
#define SYNTH_ALMOST_EMPTY 'M' /* synth has less than 2 seconds of text left */
#define SYNTH_SPEAKING  's' /* synth is speaking and has a fare way to go */