Subject: Re: Accessing my modem at com2
To: John F. Woods <jfw@jfwhome.funhouse.com>
From: ALBURQUERQUE JOSE A <albu3619@css1s0.engr.ccny.cuny.edu>
List: port-i386
Date: 08/28/1997 19:23:07
On Thu, 28 Aug 1997, John F. Woods wrote:
> > On Thu, Aug 28, 1997 at 12:54:57PM -0400, ALBURQUERQUE JOSE A wrote:
> > > Hi. I have a SupraExpress 336i PnP Voice modem attached to my com2 port
> > > which I'm trying to access under NetBSD1.2. I've recently installed
> > > XFree86 and it has no problems accessing the mouse (which is connected to
> > > com0) using /dev/tty00. I thought that by using /dev/tty02 I could access
> > > my modem, but I can't even get a simple chat script to dial out for pppd
> > > using /dev/tty02.
>
> DOS numbers the "COM" ports from 1, so if you mean that you have your mouse on
> COM1 and the modem on COM2, then the tty number is 01, not 02 (as someone else
> pointed out). If you really mean that your mouse is on COM1 and your modem is
> on COM3 (as I'd suspect), then tty02 is correct; first make sure /dev/tty02
> is actually a tty file with minor number 2 (compare it to tty00 using ls -l).
> If that's correct, then a possibility is that the modem insists on being
> configured for the same IRQ as COM1 or COM2 (i.e. some PnP modems only have
> two IRQs); the resulting IRQ sharing will result in it just not working on
> NetBSD (I had a modem like that on an NT machine a while back, and had really
> bizarre problems trying to use a serial mouse and the modem at the same time
> until I figured this out).
>
>
As you said John, my mouse is on COM1 and my modem is on COM3 under DOS.
Under NetBSD's 1.2 generic kernel they are autoprobed as com0 and com2
respectively. I did an `ls -l' as you suggested and here's what I get:
crw------- 1 uucp wheel 8, 0 Aug 28 14:18 /dev/tty00
crw------- 1 uucp wheel 8, 1 Aug 26 18:54 /dev/tty01
crw------- 1 root wheel 8, 2 Aug 26 18:56 /dev/tty02
-rw-r--r-- 1 root wheel 12 Aug 27 16:48 /dev/tty03
It seems the minor is right for /dev/tty02 and it is a modem configuration
problem. I wonder, would trying to switch the modem to another port help?
Anyway, thanks a lot for the responses.
* * * * +<><><><><><><><><><><><><><><><><><><><><><><><><><><><><>+
* * | Jose A. Alburquerque |
* O O * | joselito@becky.smartec.com |
* () * | albu3619@cslab.engr.ccny.cuny.edu |
* \----/ * | |
* * | "In God we trust" - From face of US penny |
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