Communications of the ACM
IEEE Annals of the History of Computing
Experience with porting the Portable C Compiler
ACM '82 Proceedings of the ACM '82 conference
The transition from single-platform to multi-platform software development
ATEC '98 Proceedings of the annual conference on USENIX Annual Technical Conference
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The use of top-down design methods and high-level languages in producing portable applications software is well established. By applying the same principles at the systems programming level, portability can be extended to the operating system itself.Although the Unix operating system was developed for a specific computer (the DEC PDPll), its concise and elegant design and the careful selection of 'primitives' which it provides make it an ideal candidate for portability. This paper describes the experience of adapting Unix to an Interdata 7/32.