PSS_MASTER_VOL   1032 dev/isa/pss.c      sc->out_port = PSS_MASTER_VOL;
PSS_MASTER_VOL   1331 dev/isa/pss.c      case PSS_MASTER_VOL:	/* master volume */
PSS_MASTER_VOL   1378 dev/isa/pss.c      case PSS_MASTER_VOL:	/* master volume */
PSS_MASTER_VOL   1477 dev/isa/pss.c      case PSS_MASTER_VOL:	/* master volume */
PSS_MASTER_VOL   1568 dev/isa/pss.c  	dip->prev = PSS_MASTER_VOL;