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Commercial Operating System
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<h2 id="implementations">Implementations</h2> <p>The Commercial Operating System was implemented to run on hardware from the PDP-8<a class="footnote-ref" id="fnref:4" href="#fn:4"><sup>4</sup></a> and PDP-11 families. </p> <h3>COS-310</h3> <p>COS-310 was developed for the PDP-8 to provide an operating environment for <a href="/facts/DIBOL/jS8wTBkf">DIBOL</a>. A COS-310 system was purchased as a package which included a desk, <a href="/facts/VT52/v5mlmjVF">VT52</a> VDT (Video Display Tube), and a pair of eight inch floppy drives. It could optionally be purchased with one or more 2.5 MB removable media hard drives. COS-310 was one of the operating systems available on the <a href="/facts/DECmate_II/mmUKJ1Jp">DECmate II</a>.<a class="footnote-ref" id="fnref:5" href="#fn:5"><sup>5</sup></a><a class="footnote-ref" id="fnref:6" href="#fn:6"><sup>6</sup></a> </p> <h3>COS-350</h3> <p>COS-350 was developed to support the PDP-11 <a href="/facts/Porting/7s6tFs8B">port</a> of DIBOL, and was the focus for some vendors of <a href="/facts/Turnkey/maKbM1Hb">turnkey</a> software packages.<a class="footnote-ref" id="fnref:7" href="#fn:7"><sup>7</sup></a> </p><p>Pre-COS-350, a PDP 11/05 single-user batch-oriented implementation was released; the multi-user PDP 11/10-based COS came about 4 years later.<a class="footnote-ref" id="fnref:8" href="#fn:8"><sup>8</sup></a> The much more powerful PDP-11/34 "added significant configuration flexibility and expansion capability.": p.69 </p> <h2 id="see-also">See also</h2> <ul><li><a href="/facts/Comparison_of_operating_systems/HGP8eckk">Comparison of operating systems</a></li> <li><a href="/facts/Timeline_of_operating_systems/VUkt443G">Timeline of operating systems</a></li></ul> <h2 id="notes">Notes</h2> <h2 id="references">References</h2> <ol> <li id="fn:1"><p>Binh Nguyen. Linux Dictionary. p. 424., citing "QUECID". <a href="https://books.google.com/books?id=vdZWBQAAQBAJ" target="_blank">https://books.google.com/books?id=vdZWBQAAQBAJ</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> <li id="fn:2"><p>"Time-Sharing Uses Emphasized For DEC Datasystem 350 Series". Computerworld. July 30, 1975. p. 19. Dibol Under COS: The series operates under the Commercial Operating System (COS) 350, which provides timesharing with a high-speed response. <a href="https://books.google.com/books?id=jT2fQqJplN8C&pg=PT29" target="_blank">https://books.google.com/books?id=jT2fQqJplN8C&pg=PT29</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li> <li id="fn:3"><p>DIGITAL EQUIPMENT CORPORATION - Nineteen Fifty-Seven To The Present (PDF). Digital Equipment Corporation. 1978. <a href="http://s3data.computerhistory.org/pdp-1/dec.digital_1957_to_the_present_(1978).1957-1978.102630349.pdf" target="_blank">http://s3data.computerhistory.org/pdp-1/dec.digital_1957_to_the_present_(1978).1957-1978.102630349.pdf</a> <a href="#fnref:3" class="footnote-back-ref">↩</a></p></li> <li id="fn:4"><p>PDP 8/e Small Computer Handbook. Digital Equipment Corporation. 1973. pp. 2-19 thru 2-20. <a href="#fnref:4" class="footnote-back-ref">↩</a></p></li> <li id="fn:5"><p>the other was WPS-8 <a href="/wiki/WPS-8" target="_blank">/wiki/WPS-8</a> <a href="#fnref:5" class="footnote-back-ref">↩</a></p></li> <li id="fn:6"><p>There was a product named COS-300, and some DEC manuals are named with both 300 & 310. <a href="#fnref:6" class="footnote-back-ref">↩</a></p></li> <li id="fn:7"><p>"Time-Sharing Uses Emphasized For DEC Datasystem 350 Series". Computerworld. July 30, 1975. p. 19. <a href="https://books.google.com/books?id=jT2fQqJplN8C&pg=PT29" target="_blank">https://books.google.com/books?id=jT2fQqJplN8C&pg=PT29</a> <a href="#fnref:7" class="footnote-back-ref">↩</a></p></li> <li id="fn:8"><p>DIGITAL EQUIPMENT CORPORATION - Nineteen Fifty-Seven To The Present (PDF). Digital Equipment Corporation. 1978. <a href="http://s3data.computerhistory.org/pdp-1/dec.digital_1957_to_the_present_(1978).1957-1978.102630349.pdf" target="_blank">http://s3data.computerhistory.org/pdp-1/dec.digital_1957_to_the_present_(1978).1957-1978.102630349.pdf</a> <a href="#fnref:8" class="footnote-back-ref">↩</a></p></li> </ol>