From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Hounschell Subject: Re: Serial port slow on Linux dosemu Date: Tue, 10 Jan 2012 10:13:51 -0500 Message-ID: <4F0C55AF.30600@compro.net> References: <4F0B631A.1070109@compro.net> Reply-To: markh@compro.net Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <4F0B631A.1070109@compro.net> Sender: linux-msdos-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: linux-msdos@vger.kernel.org On 01/09/2012 04:58 PM, Mark Hounschell wrote: > I've scanned the archives and tried everything I have read but my serial > ports are still very slow. I'm running some CableEye software and > connected to a cable tester via ttyS0. I've migrated an old p3 box to a > newer (still old but) Dual P4 2.2GZ processor. Everything works but the > serial port is too slow. The old p3 would test a cable in a second. Now > in the emulator it takes 8 seconds to test the same cable. > > I have tried these 2 combos with no luck > > $_ports = " device /dev/null range 0x3f8 0x3ff fast" > # $_com1 = "/dev/ttyS0" > > and > > #$_ports = " device /dev/null range 0x3f8 0x3ff fast" > $_com1 = "/dev/ttyS0" > > They act the same. How can I get this thing to sing? When using the 2 config entries below "and" the -s option "as root" the serial port speeds up to almost what it should be. It now takes 2 seconds to test the cable. That is good however, using the -s option seems to force some sort of full screen and the "ega" graphics is then broken. Without the -s option my window is as I define it in the config file and "ega" graphics works OK. $_ports = " device /dev/null range 0x3f8 0x3ff fast" # $_com1 = "/dev/ttyS0" Please help Thanks Mark