ACPIREG_PM1B_STS
acpi_read_pmreg(sc, ACPIREG_PM1B_STS, offset));
acpi_write_pmreg(sc, ACPIREG_PM1B_STS, offset, regval);
case ACPIREG_PM1B_STS:
regrb = acpi_read_pmreg(sc, ACPIREG_PM1B_STS, 0);