From owner-freebsd-hackers Sun Jul 27 11:46:44 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.5/8.8.5) id LAA16446 for hackers-outgoing; Sun, 27 Jul 1997 11:46:44 -0700 (PDT) Received: from out2.ibm.net (out2.ibm.net [165.87.194.229]) by hub.freebsd.org (8.8.5/8.8.5) with ESMTP id LAA16441 for ; Sun, 27 Jul 1997 11:46:41 -0700 (PDT) Received: from slip129-37-195-174.nc.us.ibm.net (slip129-37-195-174.nc.us.ibm.net [129.37.195.174]) by out2.ibm.net (8.8.5/8.6.9) with SMTP id SAA74664 for ; Sun, 27 Jul 1997 18:46:38 GMT From: mouth@ibm.net (John Kelly) To: hackers@FreeBSD.ORG Subject: Re: Modem problems Date: Sun, 27 Jul 1997 18:48:44 GMT Message-ID: <33dd94bb.3095243@smtp-gw01.ny.us.ibm.net> References: <19970726201841.20682@goof.com> In-Reply-To: <19970726201841.20682@goof.com> X-Mailer: Forte Agent 1.01/16.397 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by hub.freebsd.org id LAA16442 Sender: owner-freebsd-hackers@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk On Sat, 26 Jul 1997 20:18:41 -0400, you wrote: > Hi. I'm having some problems with a no-name internal >modem that are baffling me, and I'm hoping to find some help. I >recently started to need two serial ports in addition to my >modem, so I moved it to sio3 and irq 2/9, whereas it used to be >setup as sio1 irq 3. Once I changed the modem over, FreeBSD >would no longer get decent transfer rates. I have 16 serial ports in my machine. By means of resistors and diodes, two of them are sharing IRQ 9, and they work fine under FreeBSD 2-2-2. There are all sorts of things that can be wrong. I've heard some people claim that because it's the "slave" interrupt, IRQ 2/9 would not work properly in their machine, or anyone else's machine for that matter. I've never found that to be true in any machine of mine, though. I nearly always use IRQ 9 for a modem serial port without any problems. You might try a different IRQ. Even if you have to pull out some other card to try IRQ 5, 7, or whatever, the most likely person to diagnose the problem is you since you have access to the hardware. John.