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Newsgroups: comp.os.386bsd.questions
Subject: Re: FreeBSD 1.1.5.1 can't find 16550 UART MODEM on COM1
Message-ID: <ernstjdt.38.2E7D3067@ctech.ac.za>
From: ernstjdt@ctech.ac.za
Date: Mon, 19 Sep 1994 06:32:07 GMT
References: <34u053$nn4@uuneo.neosoft.com>
Organization: Cape Technikon
Nntp-Posting-Host: 155.238.48.27
Lines: 32
In article <34u053$nn4@uuneo.neosoft.com> georgel@starbase.neosoft.com (George Livsey) writes:
>Subject: FreeBSD 1.1.5.1 can't find 16250 UART MODEM on COM1
^^^550 I presume
>From: georgel@starbase.neosoft.com (George Livsey)
>Date: 11 Sep 1994 04:13:22 GMT
>
> I just recompiled the kernel in an effort to get FreeBSD to find a
>modem that I have on COM1. The modem is configured as COM1, irq 4 at 0x3f8.
>When I boot, BSD complains that it cannot find a device at that address.
>It finds the com2 serial port just fine. I noticed that the device
>drivers allow for a 16550 UART and the kernel reports that it finds a
>16450 UART on COM2. If anyone has any suggestions, I would greatly
>appreciate it.
>
>George Livsey
>georgel@starbase.neosoft.com
>
Is the MODEM internal??? I found that most internal modems with chipsets
(I had a Rockwell) somehow don't support the full UART register set or that
FreeBSD sio driver gets confused during the probe and then play safe and
don't attach the device.
If that's you case - hack the sio.c file and knock the probe routine around
a bit. You do this at your own risk, but what the heck, that's what hacking
is all about :-)
Rdgs
Ernst