{"id":8251,"date":"2026-08-07T17:07:54","date_gmt":"2026-08-07T16:07:54","guid":{"rendered":"https:\/\/www.quantum-bits.org\/?p=8251"},"modified":"2026-08-07T18:01:04","modified_gmt":"2026-08-07T17:01:04","slug":"on-retro-computing-amstrad-cpc-464-part-2","status":"publish","type":"post","link":"https:\/\/www.quantum-bits.org\/?p=8251","title":{"rendered":"On retro-computing: Amstrad CPC 464 (part 2)"},"content":{"rendered":"<p>I haven&#8217;t posted for quite some time. Actually &#8230; over a year. It&#8217;s been <strong>challenging<\/strong> and very difficult times, where I had to take care of the health of both of my parents. My sweet <strong>Lauraine<\/strong>, the <strong>love of my life<\/strong>, has been incredible throughout these months. I cannot stress how grateful I am for her to be in my life. She supports me more than I can wish for, and warms my heart each and every second. It is still an almost day-to-day challenge situation, but things are getting better. We feel now confortable enough to take a bit of time off &#8230; and therefore I&#8217;m posting again. I missed that. A lot.<\/p>\n<p><strong>Let&#8217;s move on to more cheerful news<\/strong>, shall we?<\/p>\n<p>I&#8217;m more than <strong>enjoying<\/strong> my <a href=\"https:\/\/www.dawex.com\" target=\"_blank\" rel=\"noopener\">day job<\/a>, which now also includes <strong>fighting back<\/strong> against old <strong>nemeses<\/strong> of mine (M$ and its lobby proxies) in various <strong>standardization<\/strong> <strong>bodies<\/strong> and <strong>European<\/strong> <strong>organizations<\/strong>. Nice! I&#8217;m also working with a <a href=\"https:\/\/list.cea.fr\/fr\/\" target=\"_blank\" rel=\"noopener\">CEA research lab<\/a> on some state-of-the-art data related technological subjects. And my <strong>PhD student<\/strong> brilliantly <strong>defended<\/strong> <strong>his thesis<\/strong>. He was recently <strong>awarded<\/strong> a well-deserved <a href=\"https:\/\/doctorat.univ-grenoble-alpes.fr\/actualites-du-doctorat\/prix-de-these-innovation-sociale-2026-anis-shami-1770223.kjsp\" target=\"_blank\" rel=\"noopener\">innovation prize<\/a> for his <strong>brilliant<\/strong> work. I&#8217;m so proud of him!&nbsp;<\/p>\n<p>On the <strong>hobby<\/strong> front, retro-computing has been such a big part of my moments of peace, that<strong>&nbsp;I started a YouTube channel<\/strong>: <a href=\"https:\/\/www.youtube.com\/@quantum-bits-org\" target=\"_blank\" rel=\"noopener\">https:\/\/www.youtube.com\/@quantum-bits-org<\/a> !&nbsp;<\/p>\n<p><strong>Nothing big<\/strong>, achieving a shy <strong>99 members<\/strong> at this very moment. Yes, after almost one year, this may not seem very, very impressive. Still, I&#8217;ll be <strong>so proud<\/strong> to reach the 100th subscriber milestone soon !<\/p>\n<p>For <strong>now<\/strong>, the channel only deals with <strong>retro\/vintage computing<\/strong>. Hopefully, also on some of tech \/ science and nerdy stuff. After all, the moto of the channel is &#8220;<strong>Quantum physics, Retro computing and Geeky stuff<\/strong>&#8220;. We&#8217;ll see how it goes !<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-2854\" src=\"https:\/\/www.quantum-bits.org\/wp-content\/uploads\/2022\/01\/quantum-retrocomputing-pixels.jpg\" alt=\"\" width=\"850\" height=\"448\" srcset=\"https:\/\/www.quantum-bits.org\/wp-content\/uploads\/2022\/01\/quantum-retrocomputing-pixels.jpg 768w, https:\/\/www.quantum-bits.org\/wp-content\/uploads\/2022\/01\/quantum-retrocomputing-pixels-300x158.jpg 300w\" sizes=\"(max-width: 850px) 100vw, 850px\" \/><\/p>\n<p>It is still <strong>rough<\/strong> and <strong>not<\/strong> at the level I wish it were. I don&#8217;t have a sound-proof studio and <strong>my voice sounds like shit<\/strong> when recorded. And &#8230; I&#8217;m not even mentioning noise from the street or the occasional barks from my dog. Recording sound is hard work.&nbsp;<\/p>\n<p><strong>For now<\/strong>, I&#8217;m using a <strong>text-to-speech<\/strong> tool for <strong>voice overs<\/strong>. And to be very clear, because the subject is controversial : <strong>not LLM junk<\/strong>, but good old-fashion <strong>TTS<\/strong>. <strong>No AI slop is used<\/strong>, neither for images, animations, drawings nor writing texts. Still, even though TTS has done a lot of progress, I am <strong>not<\/strong> happy with the results. Therefore, I&#8217;m working at this very moment on better sound equipment, and &#8230; you&#8217;ll be hearing my own voice and French accent soon enough.<\/p>\n<p>I&#8217;m also learning <strong>video editing<\/strong>. The first videos were made using <strong>iMovie<\/strong> (yes, I&#8217;m still a freaking Apple fanboy). I&#8217;m currently switching to <strong>DaVinci Resolve<\/strong>. Things will get better, but my <strong>workflow is still very slow<\/strong>: only 4 repair videos have been published.<\/p>\n<p>And &#8230; let&#8217;s start with the first ones. Which &#8211; of course &#8211; were dedicated to the <strong>Amstrad CPC<\/strong>, my first home computer.&nbsp;<\/p>\n<p><span style=\"font-family: amstrad-cpc;\">First video: Amstrad CPC 464 &#8211; Case &amp; Keyboard<\/span><\/p>\n<p>Please, don&#8217;t be harsh ! This was my <strong>very<\/strong> first YouTube video, and it is very <strong>amateurish<\/strong>.<\/p>\n<p>I had previously worked on a <a href=\"https:\/\/www.quantum-bits.org\/?p=7470\" target=\"_blank\" rel=\"noopener\">Commodore 64<\/a>, therefore I felt that I HAD to spend <strong>more time<\/strong> with my beloved <a href=\"https:\/\/www.quantum-bits.org\/?p=3144\" target=\"_blank\" rel=\"noopener\"><strong>Amstrad CPC 464<\/strong><\/a>. I decided to <strong>start the channel<\/strong> with a <strong>3-parts video<\/strong>, starting with <strong>taking care<\/strong> of the <strong>case<\/strong> and the <strong>keyboard<\/strong>, which had seen better days:<\/p>\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Amstrad CPC 464 - Part 1 (Case &amp; Keyboard)\" width=\"800\" height=\"450\" src=\"https:\/\/www.youtube.com\/embed\/JCSFgEKyeQc?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n<p><span style=\"font-family: amstrad-cpc;\">Second video: Amstrad CPC 464 &#8211; DDI-1 &amp; DDI-5<\/span><\/p>\n<p>The second video was a dedicated to floppy drives. After many years searching for an Amstrad CPC Floppy disk drive (DDI-1) and its controller (FDI-1), I finally found one <a href=\"https:\/\/www.leboncoin.fr\" target=\"_blank\" rel=\"noopener\">online<\/a> &#8230; at a <strong>reasonable<\/strong> price. <strong>Awesome !<\/strong> This second video is focused :<\/p>\n<ul>\n<li>The floppy Disk Drive (DDI-1)<\/li>\n<li>The Floppy Disk Controller (FDI-1)<\/li>\n<li><a href=\"https:\/\/www.sellmyretro.com\/offer\/details\/ddi-5-floppy-interface%2C-ub-emulator-and-512-ram-in-one-36061?lang=en_US\" target=\"_blank\" rel=\"noopener\">Zaxon&#8217;s DDI-5<\/a>, which combines a <strong>512Kb RAM expansion<\/strong>, a <strong>Floppy Disk Controller<\/strong> as well as a floppy <strong>disk emulator<\/strong> (using a <strong>USB<\/strong> stick)<\/li>\n<\/ul>\n<p>In the last part of the video, I showed how it is possible to use the <strong>DDI-5<\/strong> to control both <strong>FDI-1<\/strong> (as drive A for example) and the <strong>USB<\/strong> <strong>stick<\/strong> (as Drive B for example) and how to <strong>image<\/strong> physical 3&#8243; disquettes into digital <strong>.DSK<\/strong> files, and, conversely, how to copy a .<strong>DSK<\/strong> <strong>image<\/strong> onto a <strong>physical<\/strong> disquette (via <a href=\"https:\/\/cpcrulez.fr\/applications_crack-discology.htm\" target=\"_blank\" rel=\"noopener\">Discology<\/a>):&nbsp;<\/p>\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Amstrad CPC 464 - Part 2 (DDI-1 &amp; DDI-5)\" width=\"800\" height=\"450\" src=\"https:\/\/www.youtube.com\/embed\/GZ8hgSGr5qI?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n<p><span style=\"font-family: amstrad-cpc;\">Third video: Amstrad CPC 464 &#8211; DDI-1 &amp; DDI-5<\/span><\/p>\n<p>In the third video (which wasn&#8217;t very successful), I focused on fixing a good old <strong>QuickShot II joystick<\/strong> and restoring an <a href=\"https:\/\/en.wikipedia.org\/wiki\/AMX_Mouse\" target=\"_blank\" rel=\"noopener\">AMX Mouse<\/a>. The DDI-5 RAM expansion is also demonstrated (as well as the mouse) using the <a href=\"https:\/\/en.wikipedia.org\/wiki\/SymbOS\" target=\"_blank\" rel=\"noopener\">SymbOS<\/a> multitasking system for the Amstrad CPC:&nbsp;<\/p>\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Amstrad CPC 464 - Part 3 (Joystick &amp; AMX Mouse)\" width=\"800\" height=\"450\" src=\"https:\/\/www.youtube.com\/embed\/yU7-Xiab0Hc?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p><\/p>\n\n\n<p><strong>And &#8230; that is that !<\/strong> I am really <strong>grateful<\/strong> for the nice <strong>feedbacks<\/strong> and <strong>encouragements<\/strong> from the <strong>retro<\/strong> <strong>computer<\/strong> <strong>community<\/strong> for these very first <strong>baby-step videos<\/strong>. Special shoutout to <strong>Lee<\/strong> from <a href=\"https:\/\/morefunretro.co.uk\" target=\"_blank\" rel=\"noopener\">More Fun Retro<\/a>&nbsp;!<\/p>\n<p><strong>Spoiler Alert<\/strong>: the next post will be focused on the <strong>Thomson MO5<\/strong> and the YouTube video dedicated to the little <strong>French 8bit computer<\/strong> !<\/p>","protected":false},"excerpt":{"rendered":"<p>I haven&#8217;t posted for quite some time. Actually &#8230; over a year. It&#8217;s been challenging and very difficult times, where I had to take care of the health of both &#8230;<\/p>\n","protected":false},"author":1,"featured_media":8258,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0},"categories":[23,35],"tags":[],"_links":{"self":[{"href":"https:\/\/www.quantum-bits.org\/index.php?rest_route=\/wp\/v2\/posts\/8251"}],"collection":[{"href":"https:\/\/www.quantum-bits.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.quantum-bits.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.quantum-bits.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.quantum-bits.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=8251"}],"version-history":[{"count":7,"href":"https:\/\/www.quantum-bits.org\/index.php?rest_route=\/wp\/v2\/posts\/8251\/revisions"}],"predecessor-version":[{"id":8262,"href":"https:\/\/www.quantum-bits.org\/index.php?rest_route=\/wp\/v2\/posts\/8251\/revisions\/8262"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.quantum-bits.org\/index.php?rest_route=\/wp\/v2\/media\/8258"}],"wp:attachment":[{"href":"https:\/\/www.quantum-bits.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=8251"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.quantum-bits.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=8251"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.quantum-bits.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=8251"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}