Symbol: ATA_A_HOB
sys/dev/ata/ata-lowlevel.c
757
ATA_IDX_OUTB(ch, ATA_CONTROL, ATA_A_4BIT | ATA_A_HOB);
sys/dev/mvs/mvs.c
1143
ATA_OUTB(ch->r_mem, ATA_CONTROL, ATA_A_HOB);