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The ND-500 was a 32-bit superminicomputer delivered in 1981 by Norsk Data. It relied on a ND-100 to do housekeeping tasks and run the OS, SINTRAN III. A configuration could feature up to four ND-500 CPUs in a shared-memory configuration. Hardware implementations The ND-500 architecture lived through four distinct implementations. Each implementation was sold under a variety of different model numbers. ND also sold multiprocessor configurations, naming them ND-580/''n'' and an ND-590''n'', where ''n'' represented the number of CPUs in a given configuration, 2, 3, or 4. ND-500/1 Sold as the ''ND-500'', ''ND-520'', ''ND-540'', and ''ND-560''. ND-500/2 Sold as the ''ND-570'', ''ND-570/CX'', and ''ND-570/ACX''. ND-505 A 28-bit version of the ND-500 machine. Pins were snipped on the backplane, removing its status as a superminicomputer, allowing it to legally pass through the CoCom embargo. Samson Sold as the ''ND-5200'', ''ND-5400'', ''ND-5500'', ''ND-5700'', and ''ND-5800' ...
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