This call should be used only after an application has established that the Expanded Memory Manager is in fact present, using one of the techniques described in Chapter 11.Returns a status code indicating whether the expanded memory software and hardware are present and functional.
Call with:
AH = 40H
Returns:
If function successful
AH = 00H
If function unsuccessful
AH = error code
Note:
This call should be used only after an application has established that the Expanded Memory Manager is in fact present, using one of the techniques described in Chapter 11.