ATA_ATAPI_MASTER
return (ch->devices & (ATA_ATAPI_MASTER << target));
if ((ch->devices & ((ATA_ATA_MASTER | ATA_ATAPI_MASTER)
ch->devices |= ATA_ATAPI_MASTER;
ch->devices |= (ATA_ATAPI_MASTER << port);
if (ch->devices & ATA_ATAPI_MASTER &&
ch->devices &= (devs | (devs * ATA_ATAPI_MASTER));
ch->devices = ATA_ATAPI_MASTER;