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Date: Sat, 16 Aug 1997 23:45:54 -0700 (PDT)
From: stevedav@netcom.com
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Subject: i386/4315: sio0 and sio1 serial ports fail to probe
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>Number:         4315
>Category:       i386
>Synopsis:       sio0 and sio1 serial ports fail to probe
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sat Aug 16 23:50:00 PDT 1997
>Last-Modified:
>Originator:     Steve Davidson
>Organization:
>Release:        2.2.2 (as distributed from Walnut Creek CDROM)
>Environment:
FreeBSD monarch 2.2.2-RELEASE FreeBSD 2.2.2-RELEASE #0: Fri Aug 15 23:36:22 PDT 1997     root@monarch:/usr/src/sys/compile/MONARCH_01  i386
>Description:
Serial ports fail to probe on boot-up.  The output from 'dmesg':
sio0 not found at 0x3f8
sio1 not found at 0x2f8
The mainboard is a Iwill P55XB2 with Award BIOS v4.51PG.
The serial ports are at the common locations in the BIOS: 3f8/irq4 and 2f8/irq3
Both ports work correctly from MS-DOS 6.22.  Disabling the on-board serial ports and using a serial I/O card produces the same results.
>How-To-Repeat:
Simply boot the system and read the probe data.
>Fix:
Use an OS other than FreeBSD (i.e. DOS).
Purchase a different motherboard and pray that it fixes the problem.
>Audit-Trail:
>Unformatted: