From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1M1oAb-000178-6Q for qemu-devel@nongnu.org; Wed, 06 May 2009 16:56:49 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1M1oAW-00015O-4c for Qemu-devel@nongnu.org; Wed, 06 May 2009 16:56:48 -0400 Received: from [199.232.76.173] (port=48992 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1M1oAW-00015L-0Q for Qemu-devel@nongnu.org; Wed, 06 May 2009 16:56:44 -0400 Received: from mail.gmx.net ([213.165.64.20]:51343) by monty-python.gnu.org with smtp (Exim 4.60) (envelope-from ) id 1M1oAV-00041x-Az for Qemu-devel@nongnu.org; Wed, 06 May 2009 16:56:43 -0400 Message-ID: From: "Sebastian Herbszt" References: <49EF69BC.90300@gmx.de> <49F01C8D.1010203@web.de> <20090423083252.GB5277@const.bordeaux.inria.fr> <49F031C2.5000204@siemens.com> <20090423092546.GF5277@const.bordeaux.inria.fr> <49F035E7.5080906@siemens.com> <49F03A00.8060502@redhat.com> <49F0430A.8010300@siemens.com> <49FF1919.1030909@gmx.de> <49FF5033.1050402@web.de> <20090504205618.GP5889@const.famille.thibault.fr> <49FF5777.8070704@web.de> <4A006268.6040006@linux-fuer-blinde.de> <3D0ED7CD58CF4D37904670A5A85AE2C7@FSCPC> <4A0167B7.2050200@siemens.com> In-Reply-To: <4A0167B7.2050200@siemens.com> Subject: Re: [Qemu-devel] Re: Question about KVM and PC speaker Date: Wed, 6 May 2009 22:55:06 +0200 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Jan Kiszka Cc: Qemu-devel@nongnu.org, kvm@vger.kernel.org, Simon Bienlein Jan Kiszka wrote: > Sebastian Herbszt wrote: >> Simon Bienlein wrote: >>> Is a support for BIOS worked on right now? >> >> The vgabios (vgabios.c) has a "FIXME should beep". Volker, do you plan >> to fix this? >> >> Which frequency should be used for the beep? Which delay? > > I would try 1 KHz and some hundred milliseconds. I just looked at some vga bios and it uses about 896,45 Hz. >> Getting a delay using "inb(0x61) & 0x10" is still a no go on qemu, right? > > Looks like (should be far too inaccurate for longer delays). What about > 0x40:0x6c, the BIOS' daily timer counter? The bios i looked at used the refresh request port 0x61. This is supported by bochs and there is also a patch for qemu to replace the dummy [1]. The rombios uses this to provide INT 15h AH=86h functionality; this is likely broken with the dummy code in qemu. Anyway, using "timer ticks since midnight" should be possible (INT 08h handler is set up before vga bios is called). [1] http://article.gmane.org/gmane.comp.emulators.bochs.devel/7594 - Sebastian