On Mon, 2014-05-19 at 13:42 -0400, Kevin O'Connor wrote:
I don't see any reference to "int 15h, ax=0xd042" as a standard. So, maybe the author of the above text also wrote their own EFI module which used that magic value?
Well, the INT 15h call would still be on the BIOS side; that doesn't sound like an EFI thing at all. Perhaps that's a special-case hack to make their platform *trigger* the SMM entry, which then gets handled by the EFI code?
Known Bugs
With some versions of DOS [...]
With that predicate, I'm sure any conclusion is true.
True. I suppose the question is whether it's true of any versions of DOS that we *care* about. Or other operating systems that we might want to use on Quark, I suppose. Your response seems to suggest not.
I just didn't want to design myself into a corner where I'd *never* be able to fix this "known bug"?