_OSS_IO
#define OSS_SEQ_RESET _OSS_IO ('Q', 0)
#define OSS_SEQ_SYNC _OSS_IO ('Q', 1)
#define OSS_SEQ_PANIC _OSS_IO ('Q',17)
#define OSS_TMR_START _OSS_IO ('T', 2)
#define OSS_TMR_STOP _OSS_IO ('T', 3)
#define OSS_TMR_CONTINUE _OSS_IO ('T', 4)
#define OSS_SNDCTL_DSP_RESET _OSS_IO ('P', 0)
#define OSS_SNDCTL_DSP_SYNC _OSS_IO ('P', 1)
#define OSS_SNDCTL_DSP_POST _OSS_IO ('P', 8)
#define OSS_SNDCTL_DSP_NONBLOCK _OSS_IO ('P',14)
#define OSS_SNDCTL_DSP_SETSYNCRO _OSS_IO ('P', 21)
#define OSS_SNDCTL_DSP_SETDUPLEX _OSS_IO ('P', 22)