I've been working on a complete clean-room reimplementation of DR DOS from scratch. No EDR-DOS code, no FreeDOS code, no Caldera code - this is a totally new codebase built to honor Gary Kildall's vision.

Why? DR DOS deserves to exist without the legal baggage that's plagued every version since Digital Research. This is real DR DOS, legally unencumbered.

Does it work? I've tested DOOM, Warcraft, SimCity, Stronghold, Commander Keen, Oregon Trail, and plenty of other period-accurate titles. Lots works. There are still gaps.

Status: Early beta. I'm releasing new builds every week. Expect rough edges.

Download: https://www.dr-dos.com

I welcome your feedback and suggestions.

There's a LOT of menu programs out there for DOS. I wanted something more lightweight, more modern, and better supporting of virtual machines/DOSBox - and to improve the usability and friendliness of the command prompt.

There is loads of features including simple visual menu editing, power-off/reboot control, interactive command parameter help, a bunch of screensavers I designed, and the Windows 95 shutdown experience.

It's totally customizable, and works on DOS 3.3+, 286+, and EGA+.

Download + info https://github.com/therenegar/launch

IBM DOS 3.30 and MS-DOS 4.01

This MS-DOS 8.0 after bringing back MS-DOS mode in Windows Me. For getting sound though I have to start my games within Windows and let Sound Blaster emulation layer (sbemul.sys) to do its thing. It works pretty good with many sound cards.

What's impressive to me isn't so much the troubleshooting or the patching. I'm not an MS-DOS programmer, not even a low-level developer, but I'm guessing with a sample this small it's feasible to actually look at the assembly. And since C programmers from the 80s (all the way throughout the 90s) already knew assembly, they could eventually spot the bug. Patching is, as far as I understand it, just memory monkey patching.

But the fact that someone is still using a compiler from 1989 and is so neck deep in it that they've managed to hit a brick wall... that's what I find admirable, and I love the fact that there are still devs that do retro coding!

I built this Markdown editor (and a viewer as well) for DOS. I've been using it a lot for writing and its getting pretty solid now....there's something about typing documents in DOS that is so cathartic.

There's split screen editing with live "formatting" of text, a focus mode (strong WordPerfect vibes), and a graphical show mode that renders the document with fonts and styles -- both with customizable color schemes. And of course you can print.

There's a Tidy function that can cleanup documents coming from modern machines (tidying up Unicode, HTML tags, etc).

https://github.com/therenegar/launch/wiki/!MD.EXE

I wanted to share my cool find. See if anyone has any interesting info on it. Still in the original shrink wrap

So this is something really cool.. i have been working on a new graphics library for dos for quite some time that would allow a thread safe environment as allegro for example lacks this and ive worked on Aura GUI for a few years and basically hit a wall with conflicts of allegro's hold on irq8 for context switching (nightmare) and decided to give up on that and create a new library and im glad we did!.

FlameD graphics library which also can handle some limited 3d software rendering. (id love to expand for voodoo support too but eww glide?) was built for threading based graphics and as a replacement for allegro or sdl.

So last month i released a demo of pineapple 1.0 which was for non-fpu systems but i had also been working on this graphics library for Aura GUI. My main two development/test machines are a vortex86 (300mhz 486 basically with no fpu) and a dual pentium 3 system. this is the successor.

The following video was the best way for me to show you it working under dosbox-x but the player works much better on a real machine.. no sound yet.. but it will get there.

its not opensource currently as this is all new code and i have plans for this to make games which ill post some videos of the 3dfx capabilities it can do. aura gui will also run on this library from now on as an opensource version perhaps ?

Deadseas RTS game ive been working on for a while too but we hit the same wall with allegro so the team has been working hard to get this done the past few months..

unemployment for ya lol.

**TEAL** is a free, fast graphical text editor for MS-DOS, designed for both classic and modern DOS systems.
Key features include:

* VGA Mode X and VESA graphics support
* Multiple files with tabbed editing
* Project management with persistent workspaces
* Project sidebar and Quick Open
* Syntax highlighting for C, C++, Pascal, TASM, Fortran, BASIC, SQL, and more
* Fast indexed project-wide search
* XMS-backed storage for large files, undo history, clipboard, and indexes
* Word wrap, configurable fonts, themes, and resolutions
* Text selection, copy, cut, paste, and operation-based undo
* Find, Replace, Go to Line, and bracket matching
* Numbered anchors for quick navigation across project files
* Auto-indent, smart indent, and configurable tab handling
* Persistent tabs, cursor positions, anchors, and project settings
* Configurable JSON-based themes and editor preferences
* Intentionally no mouse support

I wrote TEAL because I always wanted a more modern-looking, distraction-free, and reliable development tool. It also became a fun way to learn C (while porting my old Pascal libraries). It’s still in beta, so it may be a bit memory-hungry, especially when working with large projects.

Like I said, it’s completely free, so feel free to use it however you like. If you enjoy it and would like to support the project, you can buy me a coffee. I’d also appreciate it if you dropped me a message here to let me know. If there’s enough interest, I’ll continue expanding and improving it.

Since TEAL is currently in beta, I’d be grateful for any bug reports. If you encounter any issues, please include information about your system and DOS environment so I can reproduce the problem more easily.

Amber, which is also included, is essentially just a lighter version of TEAL.

Minimum requirements: 486 DX4/80, 8 MB RAM, XMS manager, VGA capable of 640x480 
Recommended configuration: Pentium 200, 64 MB RAM or more, a fast(er) VGA card

Download it here:

https://teal-dos.pages.dev

I’ve been working on a small project called 3Dos — a low-poly 3D renderer targeting MS-DOS and VGA Mode 13h (320×200, 256 colors).

The renderer currently supports:
● Triangle rasterization with backface culling
● Ordered dithering using a 4×4 Bayer matrix
● Double buffering
● Simple low-poly models

Going back to DOS-era graphics has been relaxing after spending quite a bit of time with Vulkan. No boilerplate or abstractions, just putting a pixel at 0xA000.

Github: https://github.com/xms0g/3Dos

Hi guys. So i posted a few days ago about connecting through usb to serial port on DosBox. Just wanted to let everyone know i got it working with all your recommendations. At the end I did use Dosbox since it was the most user friendly(for me).

PC = HP Elitedesk 800 g1 mini dekstop PC, 2 GB of RAM DDR3 (for Better compatibility), Intel i5 4590t, HD graphics 4600, no hdd, only 2 USBs: One for FreeDOS and One for dos games and apps, all formatted to FAT32

BIOS SETTINGS = USB 3.0: Turned off, Internal speaker= off ehci USB port DEBUG= off

FREEDOS: download rufus on your PC, connect a 32GB or smaller USB, select freedos in the drop-down menu, and click start (this Will delete everything on your USB). Then download crazii'SBEMU 1.0.0 "beta 6" from GitHub and extract It on the USB drive. Go on your freedos USB, click on view in the Windows file Explorer menù, then Options, and make sure that the option "hide system protected files" Is Turned off, because you have to edit some system-protected files in the USB. Then edit the config.sys file on the freedos USB adding these lines in the last part of the text:

DOS=HIGH

DEVICE=jemmex.exe

Then save the file.

I also created a new CONFIG.SYS file and added again these lines, just in case. Then edit AUTOEXEC.BAT With notepad, adding these lines below:

jload qpiemu.dll

hdpmi32i -r -x

sbemu

Then save the file.

Then you have to connect audio speaker to the headphones jack. Now if you want you can Copy your apps and games on the USB drive or on another USB, Just make sure to plug in this second USB before starting Freedos. And... That's It!

SUPPORTED AUDIO CARDS: Intel ICH / nForce / SIS 7012

sc_inthd: Intel High Definition Audio (HDA)

sc_via82: VIA VT82C686, VT8233/37

sc_sbliv: SB Live! / Audigy

sc_sbl24: SB Audigy LS (CA0106)

sc_es1371: Ensoniq ES1371/1373

sc_cmi: C-Media CMI8338/8738

Support compiled-in, but untested:

sc_via82: VIA VT8235 (untested)

Recently I became interested in old x86 systems so I wanted to make an Ethernet driver for AR8152 and it turned out that it works fully :P the project is fully written by Claude Opus 5 (I am really surprised by his skills), and I managed to enter google.com

GitHub repo: github.com/openplace1/AR8152-DOS

I mean 3.x came out after 2.0 and before 4.0. So why did they skip a version?

Put together a DOS Entertainment Pack with some fun games.

They use only EGA/VGA text mode and a custom "font plane glyph manipulation game engine", to provide some sprite graphics capability. It took longer to craft low resolution pixel graphics than it did to write functional code!

Download and More Info

The official minimum required ram for PC-DOS 1.0 was 32kB though in theory it has a memory footprint of <16kB, and because the PC loads the boot sector to 0x7c00 it is impossible to boot unmodified as the highest memory address with 16kB is 0x3fff.

Here I have manually loaded and patched the boot sector using a small machine code program that I loaded into the machine using the cassette basic rom, thus getting around the restriction.

There isn't even enough ram to run edlin😂

... all this while testing a new native NVMe driver for Windows 98. The C: drive on the NVMe was created with FDISK and it's 32MB... MS-DOS 3.31 can handle partitions up to 2GB. All I had to do was enable CSM, which I'm using anyway, even with Windows 11.

check it in GITHUB
its really cool

There's a brand new HD audio driver for Windows 98/Me called WDMHDA.

Since it's a WDM driver, it will play nice with the Sound Blaster Emulation Layer built into Windows 98/ME (sbemul.sys).

And it actually works. Here's Windows 98 and this codec tested on a Ryzen 9 PC: https://youtu.be/uhWyH0TsrCc