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Date:      Thu, 26 Mar 1998 09:37:12 +1030
From:      Greg Lehey <grog@lemis.com>
To:        Plamen Petkov <kostap@mbox.digsys.bg>, freebsd-questions@FreeBSD.ORG
Subject:   Re: My FreeBSD 2.2.2 can't find on-board serial ports sio0 and sio1
Message-ID:  <19980326093712.32627@freebie.lemis.com>
In-Reply-To: <351962F8.EC48E4C6@mbox.digsys.bg>; from Plamen Petkov on Wed, Mar 25, 1998 at 10:03:04PM %2B0200
References:  <351962F8.EC48E4C6@mbox.digsys.bg>

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On Wed, 25 March 1998 at 22:03:04 +0200, Plamen Petkov wrote:
> Hi,
>
> I've installed FreeBSD 2.2.2 release... but..  at boot time kernel says
>> -+-+-
> sio0 not found at 0x3F8
> and
> sio1 not found at 0x2F8
>> -+-+-
>
> YES! They are enabled ( using kernel's boot-time -c option  ).
> YES! They are enabled (BIOS Setup)
>
> Everything works fine - disks, floppy, CDROM (TEAC)
>
> Windows 95 (OSR2) doesn't report ANY problem with serial ports or any
> other device.
>
> ----------
> System Configuration:
>
> Pentium 166
> 64MB RAM
> Primary Master Disk: 3GB Quantum (UDMA):  + Windows 95
> Primaty Slave Disk   : 3GB Seagate (UDMA): DOS part. + FreeBSD 2.2.2
> (RELEASE)
> 24x TEAC CDROM  (Secondary Master)
> 3.5' Floppy
>
> HDC/FDC, Paralel Port, 2 Serial Ports      (ALL on-board)

You've left out the most important piece: what kind of motherboard are
you using?

There is a known problem with some Intel 430TX-based motherboards,
notably those from Iwill.  The problem seems to be related to a
specific Acer UART.  I have a patch on
http://www.lemis.com/serial-port-patch.html.  Try that and see if it
helps.

Greg


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