INT 2F PU - Borland C++ DPMILOAD.EXE - GET AVAILABLE MEMORY                     
	AX = FB42h
	BX = 0003h
Return: DX:AX = size of largest free block in paragraphs
		0000h:0000h on error (BC3.0 version only)
Note:	AX and DX are destroyed on error, but no other error indicator is
	  returned, under the BC++ 2.0 version of DPMILOAD
SeeAlso: AX=FB42h/BX=0002h