Date: Tue, 7 Jun 2011 15:45:01 -0400 From: Jung-uk Kim <jkim@FreeBSD.org> To: Andriy Gapon <avg@freebsd.org> Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org, John Baldwin <jhb@freebsd.org> Subject: Re: svn commit: r222795 - head/sys/dev/atkbdc Message-ID: <201106071545.02850.jkim@FreeBSD.org> In-Reply-To: <201106071532.01179.jkim@FreeBSD.org> References: <201106062303.p56N3cjs053024@svn.freebsd.org> <4DEE773B.9090903@FreeBSD.org> <201106071532.01179.jkim@FreeBSD.org>
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On Tuesday 07 June 2011 03:31 pm, Jung-uk Kim wrote: > On Tuesday 07 June 2011 03:08 pm, Andriy Gapon wrote: > > on 07/06/2011 21:02 John Baldwin said the following: > > > On Tuesday, June 07, 2011 11:39:26 am Jung-uk Kim wrote: > > >> On Tuesday 07 June 2011 09:52 am, John Baldwin wrote: > > >> The whole point of this commit is to blacklist *recent* BIOS > > >> (or CSM) from probing keyboard typematic information, more > > >> specifically, recent Intel chipset platforms. They don't > > >> support many INT 15h/16h functions but only cause trouble at > > >> best. OTOH, I haven't seen such problems with AMD chipset > > >> systems and they all seem to have traditional entry points at > > >> the interrupt vector table, for example. > > > > > > Err, but you didn't blacklist recent BIOS. You blacklist _all_ > > > BIOS that use entry points other than the ones from the UEFI > > > spec, including BIOSes that don't claim to support UEFI and the > > > BIOS from the two systems I quoted. > > > > I'd like to simply add two datapoints: > > 1) recent AMD system: > > > > $ dd if=/dev/mem bs=4 iseek=0x15 count=2 | hd > > 00000000 59 f8 00 f0 2e e8 00 f0 > > Yes, that's exactly what I am seeing from all of my AMD systems and > a 11-year old Pentium III system. > > > 2) very old PIIX/440BX system (manufactured ~1999): > > $ dd if=/dev/mem bs=4 iseek=0x15 count=2 | hd > > 00000000 9a 06 b8 9c 2e e8 00 f0 > > INT 15h is relocated under 0xa0000, i.e., "highmem". Are you using > non-FreeBSD chain loader? Do you have "relocate to highmem" option > in the BIOS configuration? Sorry, it's actually under 640KB in conventional memory. It must be done by TSR or boot loader. Ah, good ol'days... :-P Jung-uk Kim > Most importantly, does it support keyboard typematic feature? > > Jung-uk Kim
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