{"id":53112,"date":"2022-01-24T14:28:20","date_gmt":"2022-01-24T19:28:20","guid":{"rendered":"http:\/\/pappp.net\/?guid=f75a26971f4f6b42149b1ad5f92ca6dd"},"modified":"2022-01-24T14:28:20","modified_gmt":"2022-01-24T19:28:20","slug":"reverse-engineering-the-1988-next-keyboard-protocol","status":"publish","type":"post","link":"https:\/\/pappp.net\/?p=53112","title":{"rendered":"Reverse engineering the 1988 NeXT keyboard protocol"},"content":{"rendered":"<p class=\"syndicated-attribution\">Source: <a href=\"https:\/\/journal.spencerwnelson.com\/entries\/nextkb.html\">Hacker News<\/a><\/p>\n<div style=\"background-color : #fff7d5;\n\t\t\tborder-width : 1px; padding : 5px; border-style : dashed; border-color : #e7d796;margin-bottom : 1em; color : #9a8c59;\">Article note: Oh, that's fun. \n\nThe accepted documentation was tellingly nonsense, so they _taught themselves the tools_ to figure it out. \n\nThat \"tracing back to fundamentals\" is one of the things I find most delightful about retro-computing.  Working all the way back from a glitchy behavior, to a scope trace with unexpected timing, to \"This thing is running a very sane serial protocol at the less-sane-sounding 18.958Hz frequency,\" to correlating to the components and determining that it ties back to a455kHz oscillator with a 24x divider, because 455kHz oscillators were common for AM radios.<\/div><a href=\"https:\/\/news.ycombinator.com\/item?id=30062655\" rel=\"noopener noreferrer\">Comments<\/a>","protected":false},"excerpt":{"rendered":"<p>Comments<\/p>\n<p> <a href=\"https:\/\/pappp.net\/?p=53112\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[226],"tags":[],"class_list":["post-53112","post","type-post","status-publish","format-standard","hentry","category-news-2"],"_links":{"self":[{"href":"https:\/\/pappp.net\/index.php?rest_route=\/wp\/v2\/posts\/53112","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pappp.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/pappp.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/pappp.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/pappp.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=53112"}],"version-history":[{"count":0,"href":"https:\/\/pappp.net\/index.php?rest_route=\/wp\/v2\/posts\/53112\/revisions"}],"wp:attachment":[{"href":"https:\/\/pappp.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=53112"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pappp.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=53112"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pappp.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=53112"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}