INT 6E - DECnet DOS - DECnet NETWORK PROCESS 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. InstallCheck: test for the signature/data area (see #03737) immediately prior to the interrupt handler Note: this is the main DECnet DOS access, and is described in Digital manual AA-EB46B-TV ("DECnet-DOS Programmer's Reference Manual") Index: installation check;DECnet DOS Format of DECnet DOS signature area: Offset Size Description (Table 03737) -5 BYTE major version number -4 BYTE minor version number -3 3 BYTEs signature (ASCII "DNP")