EMU_IPR_MICBUFFULL
if (stat & (EMU_IPR_MICBUFFULL | EMU_IPR_MICBUFHALFFULL))
ack |= stat & (EMU_IPR_MICBUFFULL | EMU_IPR_MICBUFHALFFULL);
if (ack & (EMU_IPR_MICBUFFULL | EMU_IPR_MICBUFHALFFULL)) {