From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1Fidm5-0001Y8-RZ for qemu-devel@nongnu.org; Tue, 23 May 2006 16:46:41 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1Fidm4-0001Xv-Bv for qemu-devel@nongnu.org; Tue, 23 May 2006 16:46:41 -0400 Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Fidm4-0001Xs-4Y for qemu-devel@nongnu.org; Tue, 23 May 2006 16:46:40 -0400 Received: from [212.227.126.171] (helo=moutng.kundenserver.de) by monty-python.gnu.org with esmtp (Exim 4.52) id 1FidqL-0000uD-VJ for qemu-devel@nongnu.org; Tue, 23 May 2006 16:51:06 -0400 Received: from [127.0.0.1] (localhost [127.0.0.1]) by flubber.weilnetz.de (Postfix) with ESMTP id 6C002F2FDD for ; Tue, 23 May 2006 22:44:05 +0200 (CEST) Message-ID: <44737414.9070905@mail.berlios.de> Date: Tue, 23 May 2006 22:44:04 +0200 From: Stefan Weil MIME-Version: 1.0 Subject: [Qemu-devel] Serial port emulation Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit Reply-To: qemu-devel@nongnu.org List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Hi, are there any plans to extend the serial port emulation in QEMU? Currently, it emulates a 16450 hardware, but most modern boards are 16550A compatible. The 16550A hardware gives better performance for serial applications (e.g. serial protocols), and I expect that it might do this in an emulation environment, too. I found a port for 16550A emulation in an earlier contribution (http://lists.gnu.org/archive/html/qemu-devel/2006-02/msg00004.html), but it obviously did not get much attention... When I tried this 16550A patch, it worked but surprisingly slowed down the serial output. Regards Stefan