In 1977, the University of California, San Diego (UCSD) Institute for Information Systems developed UCSD Pascal to provide students with a common environment that could run on any of the then available microcomputers as well as campus DEC PDP-11 minicomputers. The operating system became known as UCSD p-System.
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- http://pascal.hansotten.com ucsd-p-system/The UCSD P-System (and the popular variant Apple Pascal) extended the idea of compiler-interpreter to a complete and easy to use operating system.
- ru.us.edu.vn en/UCSD_Pascalucsd-psystem-vm, a portable virtual machine for UCSD p-System p-code. A reconstruction of the UCSD Pascal System II.0 User Manual.
- winworldpc.com product/ucsd-p-system/ivThe UCSD p-System is a highly portable operating system. ... Missing manual: "6936508 - UCSD Pascal Reference for the UCSD p-System".
- threedee.com jcm/psystem/In fact, the P-System operating system itself was written in UCSD Pascal, making the entire operating system relatively easy to port between platforms.
- Version IV.O of the UCSD p-System supports con-current processes with the use of the SIGNAL and \VAIT primitive operations on semaphores.
- http://fact-index.com u/uc/ucsd_p_system.htmlSales revived somewhat, due mostly to Pecan's reasonable pricing structure, but the p-System and UCSD Pascal gradually lost the market to native operating...
- nsa.gov portals/75/documents/news-features/…This paper discusses the UCSD p-System, an operating system for small computers developed at the University of California at San Diego.
- http://60bits.net msu/mycomp/terak/terpsyst.htmThe UCSD p-System was a highly portable operating system that ran programs whose object code was pseudocode for an idealized 16-bit processor.
- williambader.com museum/at/psysversions.htmlSince it first appeared in the introductory computer science courses at UCSD, the UCSD p-System has been remodelled into many different versions.
- heathkit.garlanger.com software/OSes/UCSDPSystem/Heath Company offered a version of the UCSD P-System operating system for their both their 8-bit computers and the 16-bit H11.