From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with archive (Exim 4.43) id 1EYWlk-0003gS-4N for mharc-grub-devel@gnu.org; Sat, 05 Nov 2005 17:44:16 -0500 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1EYWli-0003gI-FN for grub-devel@gnu.org; Sat, 05 Nov 2005 17:44:14 -0500 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1EYWlg-0003g6-Vo for grub-devel@gnu.org; Sat, 05 Nov 2005 17:44:14 -0500 Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1EYWlg-0003g3-TG for grub-devel@gnu.org; Sat, 05 Nov 2005 17:44:12 -0500 Received: from [216.136.174.139] (helo=smtp101.mail.sc5.yahoo.com) by monty-python.gnu.org with smtp (Exim 4.34) id 1EYWlg-0008Bd-Tv for grub-devel@gnu.org; Sat, 05 Nov 2005 17:44:13 -0500 Received: (qmail 31567 invoked from network); 5 Nov 2005 22:44:11 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.fr; h=Received:Date:From:To:Subject:Message-ID:In-Reply-To:References:X-Mailer:Mime-Version:Content-Type:Content-Transfer-Encoding; b=NGNoJJaP7ZPcIgix0a+QVCnONamkYM0KZaYytDy7d44WDzkBzXX6FE8kvjKgInUz03sdcGr0zDM+60kMxPXX558p4iMuDG3KXBVt6uDQ1L0xl8OgrrR81qC6HEssymGUCmYF0m4O4Z83Ct41kblqve0/J/EKTZGgX501QiRjErI= ; Received: from unknown (HELO synapse) (subdino2004@82.127.215.45 with login) by smtp101.mail.sc5.yahoo.com with SMTP; 5 Nov 2005 22:44:10 -0000 Date: Sat, 5 Nov 2005 23:43:16 +0100 From: Vincent Pelletier To: The development of GRUB 2 Message-ID: <20051105234316.0b155dea@synapse> In-Reply-To: <20051105222325.GP7383@bouh.residence.ens-lyon.fr> References: <436CBF00.1060304@yahoo.fr> <20051105222325.GP7383@bouh.residence.ens-lyon.fr> X-Mailer: Sylpheed-Claws 1.9.14 (GTK+ 2.6.10; i486-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Subject: Re: play.c X-BeenThere: grub-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: The development of GRUB 2 List-Id: The development of GRUB 2 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 05 Nov 2005 22:44:14 -0000 On Sat, 5 Nov 2005 23:23:25 +0100 Samuel Thibault wrote: > Hollis Blanchard, le Sat 05 Nov 2005 16:17:33 -0600, a écrit : BTW, thank for your comments, I'll send another version tomorrow. > > Can you describe how the PIT is related to the speaker? > That's the way one can make the speaker beep without having to keep > cpu busy with typically-440-Hz outs. One just asks the PIT to do it > for us in the background. To beep, a square generator is set to the right frequency, and then a bit allows the pulses to go to the actual buzzer. > > I'm wondering if this code could mostly work on PPC platforms that > > have PC-like peripherals. > It depends on whether the PIT is linked to the speaker like on PC. I think there is really little chance it works (ie. without writing a sound-card driver). Vincent Pelletier PS: trying sylpheed claws gtk2 ___________________________________________________________________________ Appel audio GRATUIT partout dans le monde avec le nouveau Yahoo! Messenger Téléchargez cette version sur http://fr.messenger.yahoo.com