INT 31 P - DPMIsee DOS Protected-Mode Interface 0.9+ - GET FREE MEMORY INFORMATION
	AX = 0500h
	ES:(E)DI -> buffer for memory information (see #03155)
Return: CF clear
Notes:	16-bit programs use ES:DI, 32-bit programs use ES:EDI
	this function must be considered advisory because other applications
	  may affect the results at any time after the call
	fields not supported by the DPMIsee DOS Protected-Mode Interface implementation are filled with
	  FFFFFFFFh
	DPMIsee DOS Protected-Mode Interface 1.0+ supports this function solely for backward compatibility; use
	  AX=050Bh instead
	the limited DPMIsee DOS Protected-Mode Interface host built into Phar Lap's 286|DOS-Extender v2.5 only
	  returns the first field in the memory information record
SeeAlso: AX=0501h,AX=050Bh,AX=0604h


Format of DPMIsee DOS Protected-Mode Interface memory information:
Offset	Size	Description	(Table 03155)
 00h	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	largest available block in bytes
 04h	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	maximum unlocked page allocation
 08h	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	maximum locked page allocation
 0Ch	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	total linear address space in pages
 10h	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	total unlocked pages
 14h	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	free pages
 18h	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	total physical pages
 1Ch	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	free linear address space in pages
 20h	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	size of paging file/partition in pages
 24h 12 BYTEs	reserved