Running 7th edition UNIX programs on a VAX in compatibility mode
G. R. Guenther · ACM SIGOPS Operating Systems Review · 1987
For many reasons, the 7th edition of the UNIX operating system for the PDP-II computer has become widely known and understood among the computer science community.It is now common for courses in operating system concepts to include an extensive case study of the UNIX environment.Many more advanced versions of the system are available, but the 7th edition seems to be to UNIX what FORTRAN IV is to the FORTRAN family of languages.The author teaches courses in operating system concepts at a small university with a wide range of demands on its computing resources.The university provides a VAX 11/750 for undergraduate instruction.Data processing interests and local compatibilty issues have dictated that VMS be the operating system on the VAX.Given this situation the author undertook to provide software which could emulate the UNIX environment to an extent sufficient for the instructional courses.This paper describes the result.