HelenOS sources

REG_DRIVE_HEAD    930 uspace/lib/ata/src/ata.c 	ata_write_cmd_8(chan, REG_DRIVE_HEAD, drv_head);
REG_DRIVE_HEAD    975 uspace/lib/ata/src/ata.c 	ata_write_cmd_8(chan, REG_DRIVE_HEAD, drv_head);
REG_DRIVE_HEAD   1115 uspace/lib/ata/src/ata.c 	ata_write_cmd_8(chan, REG_DRIVE_HEAD, drv_head);
REG_DRIVE_HEAD   1349 uspace/lib/ata/src/ata.c 	ata_write_cmd_8(chan, REG_DRIVE_HEAD, drv_head);
REG_DRIVE_HEAD   1427 uspace/lib/ata/src/ata.c 	ata_write_cmd_8(chan, REG_DRIVE_HEAD, drv_head);
REG_DRIVE_HEAD   1488 uspace/lib/ata/src/ata.c 	ata_write_cmd_8(chan, REG_DRIVE_HEAD, drv_head);