INT 2F U - DBLSPACE.BIN - DBLSPACE/MRCI STEALTH PACKET API(Application Program[ming] Interface) The defined set of calls which a program may make to interact with or request services of the operating system or environment under which it is running.  Because the inputs and outputs of the calls are well-defined, a program using the API can continue using the identical calls even if the internal organization of the program providing the API changes.
	AX = 4A13h
Return: AX = 134Ah if supported
	    ES:BX -> entry point record (see #02814)
SeeAlso: AX=4A11h/BX=0000h,AX=4A12h/CX=4D52h"MRCI"


Format of DBLSPACE entry point record:
Offset	Size	Description	(Table 02814)
 00h	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	pointer to FAR function for ???
 04h  5 BYTEs	FAR JUMP instruction to ???