Returns the number of expanded memory pages allocated to a specific EMM handle.
Call with:
AH = 4CH
DX = EMM handle
Returns:
If function successful
AH = 00H
BX = number of EMM pages
If function unsuccessful
AH = error code
Notes:
[EMS 3] The total number of pages allocated to a handle never exceeds
1.A handle never has zero pages allocated to it.
2.[EMS 4.0] The total number of pages allocated to a handle never exceeds
3.A handle may have zero pages of expanded memory.