From owner-freebsd-questions Wed May 29 19:08:11 1996 Return-Path: owner-questions Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id TAA12468 for questions-outgoing; Wed, 29 May 1996 19:08:11 -0700 (PDT) Received: from munnari.OZ.AU (munnari.OZ.AU [128.250.1.21]) by freefall.freebsd.org (8.7.5/8.7.3) with SMTP id TAA12377 for ; Wed, 29 May 1996 19:07:56 -0700 (PDT) Received: from integral.com.au by munnari.OZ.AU with MHSnet (5.83--+1.3.1+0.56) id CA01102; Thu, 30 May 1996 12:07:22 +1000 (from henrys@integral.com.au) Received: from gauss.com.au by coulomb.integral.com.au (4.1) id AA26749; Thu, 30 May 96 12:08:15 EST Received: by gauss.com.au (4.1/SMI-4.1) id AA20150; Thu, 30 May 96 12:06:58 EST Date: Thu, 30 May 96 12:06:58 EST From: henrys@integral.com.au (Shane M Henry) Message-Id: <9605300206.AA20150@gauss.com.au> To: questions@freebsd.org Subject: Serial port problems on Compaq Laptop Sender: owner-questions@freebsd.org X-Loop: FreeBSD.org Precedence: bulk Hi, I seem to be having a few problems getting my Laptop to work properly with its serial board. I've tryed many things but nothing seems to work. The story so far....... I have a Compaq LTE ELITE 4/40CX running FreeBSD 2.1.0 and have configured my kernel to suit. eg: sio0 at 0x3f8 irq 4 When I boot up I get an error message saying it can't find sio0 at 0x3f8 irq 4. So I rebooted it and used the -c option at boot time and set the irq on sio0 to -1. This worked it come back with the message: sio0 at 0x3f8 at 0x3f8-0x407 on isa sio0: type 16550A The problem now is that if I use the serial port at a speed of 19200 or greater I receive the following error messages: sio0: 21 more silo overflows (total 21) At 9600 everything seems to work OK. I've read a couple of mail/news from audience@soback.kornet.nm.kr who seems to be having the same problem on his Compaq Laptop he mentioned he got a easy fix for it when he was running FreeBSD 2.0 but forgot what he done. Any help would be greatly appreciated. PS my serial board is definalty set up at 0x3f8 irq4 Thanks in advance. Shane.