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 ???