{"id":2896,"date":"2018-01-04T08:46:10","date_gmt":"2018-01-04T08:46:10","guid":{"rendered":"http:\/\/avitech.com.au\/?p=2896"},"modified":"2018-01-04T08:46:10","modified_gmt":"2018-01-04T08:46:10","slug":"p-os-for-the-dec-professional-300-series","status":"publish","type":"post","link":"https:\/\/avitech.com.au\/?p=2896","title":{"rendered":"P\/OS for the DEC Professional 300 Series"},"content":{"rendered":"<p>I&#8217;ve started sorting through my collection of DEC PRO-350 and PRO-380 equipment.<\/p>\n<p>As part of this exercise, I will be imaging any original DEC floppy disks that I locate.<\/p>\n<p>I have today imaged a set of 8 disks which appear to be the installation disks for V1.5 of P\/OS.  I have not yet checked these against the documentation, so I don&#8217;t know if it is a complete set.<\/p>\n<p>Here&#8217;s a link to the disk images -> <a href=\"https:\/\/avitech.com.au\/?page_id=2887\" rel=\"noopener\" target=\"_blank\">DEC Professional 300 Series<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>I&#8217;ve started sorting through my collection of DEC PRO-350 and PRO-380 equipment. As part of this exercise, I will be imaging any original DEC floppy disks that I locate. I have today imaged a set of 8 disks which appear to be the installation disks for V1.5 of P\/OS. I have not yet checked these ..<\/p>\n<div class=\"clear-fix\"><\/div>\n<p><a href=\"https:\/\/avitech.com.au\/?p=2896\" title=\"read more...\">Read more<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[2],"tags":[],"class_list":["post-2896","post","type-post","status-publish","format-standard","hentry","category-dec"],"jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p7xTsk-KI","jetpack-related-posts":[{"id":2858,"url":"https:\/\/avitech.com.au\/?p=2858","url_meta":{"origin":2896,"position":0},"title":"Recently scanned RQDX Field Service Tech Tips","author":"malcolm","date":"14-November-2017","format":false,"excerpt":"Going through some boxes of documentation, I found some rather obscure DEC \"Field Service Tech Tips\" (and DEC uNote #043) that relate to the RQDX controllers. uNote #043 is already online elsewhere, but I had not seen these Tech Tips before. The 4 documents that I have scanned are: DEC\u2026","rel":"","context":"In &quot;DEC&quot;","block_context":{"text":"DEC","link":"https:\/\/avitech.com.au\/?cat=2"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1818,"url":"https:\/\/avitech.com.au\/?p=1818","url_meta":{"origin":2896,"position":1},"title":"DEC VT340 Internals","author":"malcolm","date":"16-April-2017","format":false,"excerpt":"This post has been converted to a webpage. It is available here -> http:\/\/avitech.com.au\/?page_id=1964 Apologies for the inconvenience.","rel":"","context":"In &quot;DEC&quot;","block_context":{"text":"DEC","link":"https:\/\/avitech.com.au\/?cat=2"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":334,"url":"https:\/\/avitech.com.au\/?p=334","url_meta":{"origin":2896,"position":2},"title":"Garage Sale on Sat 28-May-2016","author":"mmacleod@iinet.net.au","date":"20-May-2016","format":false,"excerpt":"I'm having a garage sale on Saturday 28 May 2016 to thin out my vintage computer collection a little. Everything put out for sale will be $5 to $20 per item - including large VAX machines. The items available include those shown below (and many more): The items include, for\u2026","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2016\/05\/20160519_173658_resized-e1463733391540.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2016\/05\/20160519_173658_resized-e1463733391540.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2016\/05\/20160519_173658_resized-e1463733391540.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2016\/05\/20160519_173658_resized-e1463733391540.jpg?resize=700%2C400 2x, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2016\/05\/20160519_173658_resized-e1463733391540.jpg?resize=1050%2C600 3x"},"classes":[]},{"id":1413,"url":"https:\/\/avitech.com.au\/?p=1413","url_meta":{"origin":2896,"position":3},"title":"New neon indicator for DEC 871B Power Controller","author":"malcolm","date":"26-December-2016","format":false,"excerpt":"The 871B Power Controller is a single-phase 240VAC power controller found in some PDP-11 systems. It has 6 switched power sockets. One of my holiday projects was to replace the faulty neon indicator in this Power Controller. I have just posted a short webpage with some information about this repair,\u2026","rel":"","context":"In &quot;DEC&quot;","block_context":{"text":"DEC","link":"https:\/\/avitech.com.au\/?cat=2"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2016\/12\/20161226_105815-Large-300x169.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":1285,"url":"https:\/\/avitech.com.au\/?p=1285","url_meta":{"origin":2896,"position":4},"title":"[Outdated post] Vintage computers for sale or swap","author":"malcolm","date":"13-October-2016","format":false,"excerpt":"15-May-2021: Note this is a very old post - most of the items below are no longer available. It's time to thin out my vintage computer collection a little. Below is a list of items currently available. My order of priority for finding new homes for this equipment is as\u2026","rel":"","context":"With 40 comments","block_context":{"text":"With 40 comments","link":"https:\/\/avitech.com.au\/?p=1285#comments"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2016\/05\/factory-20151007-143900-Medium.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2016\/05\/factory-20151007-143900-Medium.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2016\/05\/factory-20151007-143900-Medium.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2016\/05\/factory-20151007-143900-Medium.jpg?resize=700%2C400 2x, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2016\/05\/factory-20151007-143900-Medium.jpg?resize=1050%2C600 3x"},"classes":[]},{"id":252,"url":"https:\/\/avitech.com.au\/?p=252","url_meta":{"origin":2896,"position":5},"title":"VT220 current loop interface","author":"malcolm","date":"14-May-2016","format":false,"excerpt":"This post takes a brief look at the current loop connectors used by DEC. The main focus of this post is the cabling needed to connect a VT220 terminal to a computer (such as a PDP-11\/10) using the 20mA current loop interface. DEC's standard connector DEC used an 8-pin Mate-N-Lok\u2026","rel":"","context":"In &quot;Current loop&quot;","block_context":{"text":"Current loop","link":"https:\/\/avitech.com.au\/?cat=10"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2016\/05\/conn-male-top.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2016\/05\/conn-male-top.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2016\/05\/conn-male-top.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2016\/05\/conn-male-top.jpg?resize=700%2C400 2x, https:\/\/i0.wp.com\/avitech.com.au\/wp-content\/uploads\/2016\/05\/conn-male-top.jpg?resize=1050%2C600 3x"},"classes":[]}],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/avitech.com.au\/index.php?rest_route=\/wp\/v2\/posts\/2896","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/avitech.com.au\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/avitech.com.au\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/avitech.com.au\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/avitech.com.au\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2896"}],"version-history":[{"count":1,"href":"https:\/\/avitech.com.au\/index.php?rest_route=\/wp\/v2\/posts\/2896\/revisions"}],"predecessor-version":[{"id":2897,"href":"https:\/\/avitech.com.au\/index.php?rest_route=\/wp\/v2\/posts\/2896\/revisions\/2897"}],"wp:attachment":[{"href":"https:\/\/avitech.com.au\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2896"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/avitech.com.au\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2896"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/avitech.com.au\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2896"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}