VP_STATUS
XgaGetIsaData(
      PHW_DEVICE_EXTENSION HwDeviceExtension,
      PCM_MCA_POS_DATA PosData
  );

Routine Description:

    This routine gets the XGA configuration information from an ISA system.

Arguments:

    HwDeviceExtension - Supplies a pointer to the miniport's device extension.

    PosData - Pointer to a buffer containing the POS information for the
        device if it was found.

Return Value:

    NO_ERROR if the XGA device was found.
    ERROR_DEV_NOT_EXIST otherwise.