PHILLIPS_VOL_STEP 1127 dev/isa/pss.c      pss_dspwrite(sc, MASTER_VOLUME_LEFT|(PHILLIPS_VOL_CONSTANT + gp->left / PHILLIPS_VOL_STEP));
PHILLIPS_VOL_STEP 1129 dev/isa/pss.c      pss_dspwrite(sc, MASTER_VOLUME_RIGHT|(PHILLIPS_VOL_CONSTANT + gp->right / PHILLIPS_VOL_STEP));