mmAFMT_AUDIO_PACKET_CONTROL2
WREG32(mmAFMT_AUDIO_PACKET_CONTROL2 + dig->afmt->offset,
tmp = RREG32(mmAFMT_AUDIO_PACKET_CONTROL2 + dig->afmt->offset);
WREG32(mmAFMT_AUDIO_PACKET_CONTROL2 + dig->afmt->offset, tmp);
WREG32(mmAFMT_AUDIO_PACKET_CONTROL2 + offset,