Messages in this thread |  | | From | "H. Peter Anvin" <> | Subject | Re: KERNEL BUG: console not working in linux | Date | 27 Nov 2000 19:23:08 -0800 |
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Followup to: <20001128041409.A9525@veritas.com> By author: Andries Brouwer <aeb@veritas.com> In newsgroup: linux.dev.kernel > > On Mon, Nov 27, 2000 at 05:40:58PM -0800, H. Peter Anvin wrote: > > > > What about adding an additional > > > > > > andb $0xfe, %al > > > > > > in front of the outb? > > > Already in test12-pre1. > > Ach, I see I am too slow - had not even seen -pre1 and now Linus > already announces -pre2. > > Anyway, I considered that this A20 stuff belonged to my docs on > the keyboard controller, so added a page > > http://www.win.tue.nl/~aeb/linux/kbd/A20.html > > (written half an hour ago). Comments are welcome. >
One thing... the "thwarted by cache" comment probably isn't very useful. As far as I know the only machines which have the cache problem are i386 boxen, but the i386 doesn't have WBINVD. The i486 has a pin on the CPU for A20, which takes effect inside the L1 cache, and so it shouldn't have any A20 cache issues.
-hpa
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