BL_STATUS_REG
if(!(inb(BL_STATUS_REG) & BL_STATUS_HARDY)) {
status = inb(BL_STATUS_REG);
status = inb(BL_STATUS_REG);
while(!(inb(BL_STATUS_REG) & BL_STATUS_HARDY)) {
status = inb(BL_STATUS_REG);