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I made my own DOS implementation (Announce)

posted by KormaX, 02.02.2024, 11:11

I disagree. I mean, I agree with samwdpckr in that writing an entire UEFI-aware DOS is not a meaningful solution, neither is anything that requires us to come up with a cr*pton of drivers whenever a new motherboard is introduced, but it's not mandatory to leave boot services. And UEFI provides boot services to just about every part of the computer. He mentioned v86 as a way to avoid memory conflicts, that wouldn't work for the exact reasons he's said, but I don't know why everybody forgets VT-x when talking about these topics. I don't know any DOS program that uses VT-x, so if we have a BIOS, that can be loaded as an UEFI application and that initializes a VT-x session right away without ExitBootServices(), it would work.

We have a bunch of open source BIOS surfaces already. We just need someone with the skills, free time and enthusiasm of somebody like Crazii to replace tha back end of literally any of those (ranging from the one in DOSBox to SeaBIOS) with a UEFI translation layer. Or less skills but more free time. Or even less skills and even more free time.

Not only that it would work but also it might be even more effective than most of the things we already have, I mean, it would be a great opportunity to integrate many functions into one single program from a packet interface for UEFI network services through memory management to sound card support and fixing video output. And philosophically it would still be just as native as doing all these things separately with various v86 hacks.

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DOS isn't about why. It's about why not.

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