Harris Computer Systems: Difference between revisions

Revision as of 23:14, 13 November 2022

Revision as of 18:18, 5 January 2023

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In this fashion, Harris Computer offered three operating systems: CX/RT, built around real-time processing features and constraints; CX/SX, for customers needing government-specified levels of security, and CX/UX, for a system offering a Unix basis.<ref name="ci-88000"/> The three CX variants shared the same object and file formats and could reside on the same disk drive as each other.<ref name="ci-88000"/>

The secure version of Unix was popular among some government contracts where security was a primary consideration.<ref name="iw-1992"/><!-- https://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.27.8581&rep=rep1&type=pdf cert warning, don't try -->

In particular, CX/SX reached B1 Orange Book and B1 Red Book status in the U.S. government's [[Trusted Computer System Evaluation Criteria]].<ref>{{cite book | title=Network+ Study Guide | author=David Groth | author2= Toby Skandier | publisher=John Wiley & Sons | year=2006 | pages=348ndash348&ndash;349 | isbn=9780782150780 | url=https://books.google.com/books?id=B_PmNWSqCFgC&pg=PA349 | edition=Fourth }}</ref>

By the late 1980s/early 1990s, the major product of Harris Computer Systems Division was the Night Hawk series of real-time systems.<ref name="iw-1992"/><ref name="njbiz"/>