QE_MR_PLSCC_PORTMASK
switch (bus_space_read_1(t, mr, QE_MRI_PLSCC) & QE_MR_PLSCC_PORTMASK) {
plscc = bus_space_read_1(t, mr, QE_MRI_PLSCC) & ~QE_MR_PLSCC_PORTMASK;