Norsk Data A/S yesterday responded to IBM’s Systems Applications Architecture with its own Norsk Application Architecture, embracing MS-DOS, Unix and its own Sintran III operating systems, tied together by Ethernet and TCP/IP with Open Systems protocols. New products for this year include PC286 and 386 workstations, a Workgroup Server as a concentrator and shared peripherals unit for Ethernets, to be followed by an ND5000 Sintran server. And in Unix, a native System V.2 server will be available at year-end using the ND5000 32-bit mini.