Not Another Completely Heuristic Operating System
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Not Another Completely Heuristic Operating System, or NACHOS, is instructional software for teaching undergraduate, and potentially graduate, level operating systems courses. It was developed at the University of California, Berkeley, designed by Thomas Anderson, and is used by numerous schools.
Originally written in [[C++]], the current version (5.0j) is in Java.
Stanford University used NACHOS until 2004, when it introduced Pintos, a derivative on NACHOS written in C and designed to run on actual x86 hardware.
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