Int 67H [EMS 4.0] Function 58H (88) Subfunction 01H Get number of mappable pages

Returns the number of mappable physical pages.

Call with:

AH = 58H

AL = 01H

Returns:

If function successful

AH = 00H

CX = number of mappable physical pages

If function unsuccessful

AH = error code

Note:

The information returned by this function can be used to calculate the size of the buffer that will be needed by Int 67H Function 58H Subfunction 00H.