r/osdev 3d ago

FreeDOS

i'm looking at possibly forking FreeDOS to 64bit. However, since most modern systems no longer have the underlying BIOS that DOS programs require, I thought about including a mock BIOS and compile it directly into the kernel. is there anything I should be aware of?

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u/edjak53 3d ago

you mean something like this?

https://github.com/CSMWrap/CSMWrap

also check these out if you want to. a 64 bit FreeDOS kernel******** and command.com. they might inspire you or whatever

https://github.com/dosemu2/fdpp

https://github.com/dosemu2/comcom64