INT 17 - NorthNet Jetstream 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. - PRINT DATA BUFFER FROM EXTENDED MEMORY AH = F5h CX = data buffer length DX = printer port (0-3) DS:SI -> data buffer (32-bit physical address) Return: AX = status 0000h printer not ready (see also AH=02h) other printing started SeeAlso: AH=F1h