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I was thinking how to “boot to Lode Runner” on my Pi400, so this might be close enough:)
Just add an "autoexec.bat"!
> Join the official Facebook group […]

Of all the things, why Facebook?

> Dosbian is compatible with the following Raspberry Pi models:

I am amazed this doesn't run on literally any Pi since forever, it seems to be limited to Pi 3 and up. I have an old Pi 1B+ that I still use to host all of my websites.

Whenever I see stuff like this, the ITX Llama [1], Pixel x86, etc. I think it's finally the time to build my ultimate love-letter to old school DOS and retro computing but always stop short because of the monitor issue.

I feel like a lot of my nostalgia likely stems from the bright super low latency phosphor displays of a proper CRT. No amount of WebGL shaders/filters [2] ever quite seem to capture the original experience IMHO.

[1] https://smallformfactor.net/news/retro-sff-itx-llama-is-a-br...

[2] https://github.com/Swordfish90/cool-retro-term

a 500Hz OLED has a much lower latency than a 60Hz CRT
I'm the same as you. In my case, the monitor I grew up with was a monochrome screen with a slight sepia hue - I have never been able to find a similar CRT on eBay or elsewhere.

What completes the experience is the sounds, lights and loading times. When I push the power button, I want to hear all the familiar clicks and whirls followed by the loud BIOS POST beep, immediately followed by the sound of the floppy drive coming to life. I do NOT want a flash media drive, I want a slow, mechanical HDD where things actually takes times to load, and you get to hear the familiar disk spinning and access sounds. And the lights, don't forget those little LEDs which accompanied the sounds, like a conductor conducting an orchestra.

And you know what I miss the most? It's the modem. I miss the dialup sounds. I miss being able to tell what speed I'd be getting connected at based on the sounds. I miss the BBSes and telnet servers of the era. And IRC. And the early web, free of bloated modern Javascript. And apps - real apps coded in ASM/C/C++ that prioritised efficiency and produced tiny binaries that ran without needing a million dependencies. And operating systems that fit an entire GUI desktop in 1.44MB...

What features or games are you most excited to explore with Dosbian?
Why not use https://www.freedos.org? Or boot FreeDOS straight from QEMU. Using Debian seems incredibly bloated when the goal is to use DOS. Alpine Linux would be a better base. Then you can use real DOS or a compatible one like FreeDOS.
I have an usb floppy disk drive. I wonder if dosbian could boot off it.
AutoCAD R12 here I come