HelenOS sources

REG_DRIVE_HEAD    932 uspace/lib/ata/src/ata.c 	ata_write_cmd_8(chan, REG_DRIVE_HEAD, drv_head);
REG_DRIVE_HEAD    977 uspace/lib/ata/src/ata.c 	ata_write_cmd_8(chan, REG_DRIVE_HEAD, drv_head);
REG_DRIVE_HEAD   1117 uspace/lib/ata/src/ata.c 	ata_write_cmd_8(chan, REG_DRIVE_HEAD, drv_head);
REG_DRIVE_HEAD   1351 uspace/lib/ata/src/ata.c 	ata_write_cmd_8(chan, REG_DRIVE_HEAD, drv_head);
REG_DRIVE_HEAD   1429 uspace/lib/ata/src/ata.c 	ata_write_cmd_8(chan, REG_DRIVE_HEAD, drv_head);
REG_DRIVE_HEAD   1490 uspace/lib/ata/src/ata.c 	ata_write_cmd_8(chan, REG_DRIVE_HEAD, drv_head);