Network Systems Corporation

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Network Systems Corporation (NSC) was a spin-off of Control Data Corporation (CDC) which was an early maker of high-performance, local area network (LAN) hardware called Hyperchannel(tm). Hyperchannel had a 50 MHz carrier frequency and was limited to a range of approximately 5,000 ft. NSC was based in Minneapolis, Minnesota. Consequently the NSC customer base started with customers of CDC and Cray Research hardware. Packet size is dependent upon the amount of memory provided for memory buffers in Hyperchannel adapters.

The comparative expense, about $40,000 per adapter, contrasted with emerging slower, less expensive LAN options such as Xerox Ethernet and the IBM Token ring.

[edit] Sources

  • W. R. Franta and J. P. Hughes, Network Systems Corp., "HYPERChannel DX." 1988 Fall Proceedings Cray User Group Meeting, Washington DC, Fall 1988, pp. 214-231.
  • O. Spaniol, "Analysis and Performance Evaluation of HYPERchannel Access Protocols." 2nd International Conference on Distributed Computing Systems, IEEE, Paris, France, April 1981, pp. 247-255.
  • W. B. Watson, "Capacity Testing a HYPERchannel-Based Local Area Network." Procs. of the 9th Int. Conf. on Distributed Computing Systems (9th ICDCS'89), IEEE, Newport Beach, CA, June 1989, pp. 448-454.