Messages in this thread |  | | Date | Wed, 06 Dec 2000 09:37:03 -0800 | From | "H. Peter Anvin" <> | Subject | Re: That horrible hack from hell called A20 |
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Alan Cox wrote: > > > INT 15-2401 disable A20 > > INT 15-2402 query status A20 > > INT 15-2403 query A20 support (kdb or port 92) > > > > IBM classifies these functions as optional, but it is enabled on a lot > > of > > new BIOS, no know conflicts, thus we can call this function to enable > > A20, > > check the result and only after failure we can try the old methods. > > I trust Linus over BIOS vendors, every single time. >
The problem here is Linus doing things right, and the BIOS vendors not... and the BIOS getting confused. If INT 15:24xx is supported, we might actually want to use it, under the assumption that if it works, the BIOS Suspend-to-Foo routines probably won't get too confused.
-hpa
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