M1575_BD_NUMS
PUT8(M1575_PCMILVIV_REG, M1575_BD_NUMS - 1);
PUT8(M1575_PCMOLVIV_REG, M1575_BD_NUMS - 1);
PUT8(lvioff, (civ - 1) % M1575_BD_NUMS);
port->bdl_size = sizeof (m1575_bd_entry_t) * M1575_BD_NUMS;
for (int i = 0; i < M1575_BD_NUMS; i++) {