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Gammitin (Ben) 💾Needs cleaning up (pencil marks), but looks pretty decent. I just need to add a floppy activity LED light and small hole for the speaker (floppy drive sounds). Then it's mounting it all inside. Not too far off now, <a href="https://mastodon.social/tags/Doscember" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Doscember</a> has turned into <a href="https://mastodon.social/tags/Dosuary" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Dosuary</a> 😆

Charlie BaloghLast minute <a href="https://mastodon.social/tags/DOScember" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#DOScember</a> entry, if fiddling with BIOS stuff counts... A while ago I bought this Soyo 386DX mainboard with a 486DLC + FPU in it from evilBay, with the intent of reproducing one of the quirky and weird setups of my youth. But that board had Mr. BIOS in it, while this thing came with AMI BIOS.So I bought a handful of 27C512 EPROMs, burned a matching Mr. BIOS image thanks to the preservation efforts of people on Vogons.org, a quick chip swap and here we go. 😍<a href="https://mastodon.social/tags/msdos" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#msdos</a> <a href="https://mastodon.social/tags/retrocomputing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#retrocomputing</a>

lprovenSvarDOS: DR-DOS is reborn as an open source operating system<a href="https://www.theregister.com/2024/12/23/svardos_drdos_reborn/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.theregister.com/2024/12/23/svardos_drdos_reborn/</a>A <a href="https://social.vivaldi.net/tags/DOScember" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#DOScember</a> surprise: fits on a single floppy, but has a network-capable package manager<- by me on <a href="https://geeknews.chat/@theregister" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@theregister</a>

Gammitin (Ben) 💾🧵 New Thread 🧵 My second <a href="https://mastodon.social/tags/Doscember" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Doscember</a> 486 project. A 486DX2-66 VLB desktop rebuild, here's the CPU, more details to follow soon (Yes, it will run DOOM):

Gammitin (Ben) 💾The budget soundcard for my <a href="https://mastodon.social/tags/Doscember" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Doscember</a> 486DX2-66 VLB DOOM PC build is (🙏ing it arrives safely): Avance Logic ALS100 Plus+ Pro16/32PNP+

Thomas 🕹️🔭It's <a href="https://bsky.brid.gy/hashtag/DOScember" rel="nofollow noopener noreferrer" target="_blank">#DOScember</a>! Here's DOS and Windows 3 running on a... NeXTstation color?! It's also running Mac OS. And NeXTSTEP. All at the same time. And it did that 34 years ago. SoftPC got a version of DOS/Windows from Microsoft that's (partially) compiled for the Motorola 68040. <a href="https://bsky.brid.gy/hashtag/retrocomputing" rel="nofollow noopener noreferrer" target="_blank">#retrocomputing</a>

The FreeDOS ProjectIcymi, here's the first <a href="https://fosstodon.org/tags/DOScember" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#DOScember</a> article I shared on Both.org about ‘Celebrating 30 years of open source with FreeDOS’<a href="https://www.both.org/?p=7599" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.both.org/?p=7599</a>

The FreeDOS ProjectIt's December, and that means it's <a href="https://fosstodon.org/tags/DOScember" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#DOScember</a> And for this month, I'm writing articles to highlight FreeDOS— weekly on All Things Open, and weekly on Both.orgCheck out today's article, about 5 editors installed with FreeDOS that I like using the most!1️⃣ FreeDOS Edit 2️⃣ FreeDOS Edlin 3️⃣ Freemacs 4️⃣ Fed, the folding editor 5️⃣ OpenWatcom’s Vi<a href="https://allthingsopen.org/articles/5-freedos-text-editors" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://allthingsopen.org/articles/5-freedos-text-editors</a>

Jill Veldhuis 💾So... here we are two days into <a href="https://kind.social/tags/DOScember" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#DOScember</a> and I haven't even booted my DOS/Win3 machine much less done anything fun with it.IDK, anyone want to set up an IPX-over-IP net and play some OG Doom?(and how do people even do that nowadays anyway? Kali and Khan are long dead obviously)

Gammitin (Ben) 💾So it's now <a href="https://mastodon.social/tags/DOScember" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#DOScember</a>, time for a rebuild/upgrade project. This year I'm going for a 486 based system, my plans are - 486DX2- 66Mhz - VLB or fast 16-bit ISA Video - PicoGUS (Gravis Ultrasound) - Period correct CD-ROM - Custom 5.25" Drive bay, with Gotek and MHZ display!

WhiskyTangoFoxtrotI'm planning on starting a Twitch stream in a couple of weeks, to participate in the <a href="https://mastodon.social/tags/Doscember" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Doscember</a> event. Current plan is to stream on Wednesdays at 7:00 pm EST starting December 4th. For my first stream I'll be playing <a href="https://mastodon.social/tags/Freedoom" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Freedoom</a> and getting started on <a href="https://mastodon.social/tags/TexMurphy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#TexMurphy</a> : The Pandora Directive.My <a href="https://mastodon.social/tags/Twitch" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Twitch</a> URL is <a href="https://www.twitch.tv/whiskytangofoxtrot/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.twitch.tv/whiskytangofoxtrot/</a><a href="https://mastodon.social/tags/retrogaming" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#retrogaming</a> <a href="https://mastodon.social/tags/msdos" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#msdos</a>

The FreeDOS ProjectWhat are your plans for <a href="https://fosstodon.org/tags/DOScember" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#DOScember</a> in December? I'm planning to write some articles about the cool stuff you can find in FreeDOS, to run on different websites like ATO and Both.orgI'd love to make a DOS game but (1) game dev isn't really my strength area, and (2) I don't know what genre of game I'd write that doesn't already exist on DOS. DOS has a lot of games. 😃

mmu_man<a href="https://studio8502.ca/@mos_8502" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@mos_8502</a> just in time for <a href="https://m.g3l.org/tags/DOScember" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#DOScember</a>!

Ron's Computer Videos🖥️📼Let's benchmark the <a href="https://bitbang.social/tags/Apple" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Apple</a> <a href="https://bitbang.social/tags/PC" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#PC</a> Compatibility Card for <a href="https://bitbang.social/tags/Macintosh" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Macintosh</a> just in time for <a href="https://bitbang.social/tags/DOSCember" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#DOSCember</a>!! <a href="https://youtu.be/SB-oy31dsco" rel="nofollow noopener noreferrer" target="_blank">https://youtu.be/SB-oy31dsco</a>

GEM is truly truly outrageousfelt like playing some christmas lemmingswhich of course turned in to an hour of debugging ~TSR conflicts~one thing i didn't realise about DOS lemmings, it does some tricky palette switching business for the bottom status bar?is it switching to 16 colors?long story short, Zeno (a BIOS text accelerator) somehow interferes with this and causes the button bar to black outmaking the game rather hard to playso don't run Zenoin fact Windows 95 detects Lemmings and tries to force you to run it in plain DOS modebecause if you force it to run inside windows it runs unplayably slow and the color palette flickersso pure DOS mode only folkslemmings is doing some wild stuff with timers and VGA IRQs or somethingi believe its entirely 16bit codemerry phosphor christmas!<a href="https://oldbytes.space/tags/retrogaming" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#retrogaming</a> <a href="https://oldbytes.space/tags/DOScember" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#DOScember</a> <a href="https://oldbytes.space/tags/MSDOS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#MSDOS</a> <a href="https://oldbytes.space/tags/VGA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#VGA</a> <a href="https://oldbytes.space/tags/CRT" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#CRT</a>

MrKsoftMy OPL music player is making progress! Now it supports VGM files. It can play OPL1, OPL2 and OPL3 songs, and supports VGM GD3 tags and loops! Performance is not great yet (needs roughly a 486DX-33) but there are lots of opportunities for improvement! <a href="https://bitbang.social/tags/retrocomputing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#retrocomputing</a> <a href="https://bitbang.social/tags/DOScember" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#DOScember</a>

Silicon Underground (Dave F)The <a href="https://ioc.exchange/tags/Tandy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Tandy</a> 2000 improved on the IBM PC, but the improvement came at the cost of compatibility. Tandy learned its lesson. But I argue they learned their lesson too well. In this blog post, I trace Tandy's early 90s problems all the way back to 1983. <a href="https://ioc.exchange/tags/RetroComputing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#RetroComputing</a> <a href="https://ioc.exchange/tags/DOScember" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#DOScember</a> <a href="https://dfarq.homeip.net/how-the-tandy-2000-doomed-tandy-computers/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://dfarq.homeip.net/how-the-tandy-2000-doomed-tandy-computers/</a>

Silicon Underground (Dave F)Today's blog post covers Intel's 186 CPU. The 80186 was a flop as a desktop CPU but a famous company founded by two guys in a garage in California used it very successfully in an early handheld. Not to mention the extensive use it saw as an embedded CPU. <a href="https://ioc.exchange/tags/RetroComputing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#RetroComputing</a> <a href="https://ioc.exchange/tags/DOScember" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#DOScember</a> <a href="https://dfarq.homeip.net/intel-80186-cpu-so-misunderstood/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://dfarq.homeip.net/intel-80186-cpu-so-misunderstood/</a>

GEM is truly truly outrageouscontinuing <a href="https://oldbytes.space/tags/DecemberAdventure" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#DecemberAdventure</a> in <a href="https://oldbytes.space/tags/DOScember" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#DOScember</a>fun fact: the original IBM 5150 PC had a very slow and unskippable memory test, WITH NO USER INDICATION OF WHAT IS GOING ON(the PC XT added the now iconic memory count)on a cold boot, a PC loaded with a full 640k meant a small school child staring at nothing more than a blinking cursor for a full.... 50 seconds! nearly a full minute before you got a beep and drive noises!and pcem emulates this with 100% fidelity 🙃after getting really sick of waiting for this delay while testing lcdcal, i did what any sane person would do and dig up the PC BIOS source code... and build itsome seem to think the PC BIOS was some sort of secret, but in fact the source code was published in the IBM Technical Reference manualsmachine readable copies have floated around in the dark corners of BBSs and warez disks ever sincebut how do you build it? a thread<a href="https://oldbytes.space/tags/retrocoding" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#retrocoding</a> <a href="https://oldbytes.space/tags/MSDOS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#MSDOS</a> <a href="https://oldbytes.space/tags/RetroPC" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#RetroPC</a>

Silicon Underground (Dave F)Adaptec controllers were the best of their kind and at one time we considered them essential. But they seemed to sort of fade away. What happened to Adaptec? I found out. <a href="https://ioc.exchange/tags/RetroComputing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#RetroComputing</a> <a href="https://ioc.exchange/tags/DOScember" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#DOScember</a> <a href="https://dfarq.homeip.net/what-happened-to-adaptec/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://dfarq.homeip.net/what-happened-to-adaptec/</a>

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