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Soundcard emulation in DOS on non-legacy hardware. Possible? (Emulation)

posted by Zyzzle, 05.11.2022, 08:46

> Hello Zyzzle,
>
> As I mentioned, you can probably try to load a VGA option ROM image into
> RAM instead. Check (via the "PCIR" data) that the option ROM is compatible
> with your actual video card, and run the code from RAM. Maybe do this from
> within a DOS TSR or device driver, to (re)initialize the video BIOS after
> system startup. With any luck, this will work.
>
> This is of course a less "permanent" solution than actually flashing the
> code onto a ROM chip. But it should be less risky. ;-)
This is a very good avenue to pursue. Heck, a small TSR which could do this automatically every time upon reboot wouldn't be that difficult to write, and would be far less risky than modification of the ROM and reflashing the BIOS and its checksums and so on.

>
> (My (still very nascent)
> biefircate project tries
> to do something similar.)
Thanks very much for pointing out this project of yours! I'm going to try this image and see how I fare. Running 16-bit code on UEFI-only system is very complicated compared to merely "fixing" a bad video BIOS of Intel's, I think. Congratulations for attempting the project. If I can help its progress in some possible way, please send me a PM.

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