Subject: port-i386/8248: reset from a Sun Ultra 10 at a console via com0 resets the NetBSD
To: None <gnats-bugs@gnats.netbsd.org>
From: None <frueauf@netbsd.org>
List: netbsd-bugs
Date: 08/21/1999 06:37:56
>Number:         8248
>Category:       port-i386
>Synopsis:       reset from a Sun Ultra 10 at a console via com0 resets the NetBSD 
         machine too
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    port-i386-maintainer (NetBSD/i386 Portmaster)
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Aug 21 05:05:00 1999
>Last-Modified:
>Originator:     Thorsten Frueauf
>Organization:
private
	
>Release:        <NetBSD-current source date> NetBSD-current from 14.08.1999
>Environment:
	

Toshiba Tecra 500CDT

System: NetBSD cyberlap 1.4J NetBSD 1.4J (CYBERLAP) #2: Sun Aug 15 20:35:20 MEST 1999 frueauf@cyberlap:/usr/src/sys/arch/i386/compile/CYBERLAP i386

kernel entry:
com0    at isa? port 0x3f8 irq 4        # Standard PC serial ports

message at boot time:
com0 at isa0 port 0x3f8-0x3ff irq 4: ns16550a, working fifo

/etc/remote:
hardwire:dv=/dev/tty00:br#9600:dc:pa=none


>Description:
	
I connected the serial port from my laptop running NetBSD-current build
from 14.08.1999 sources to the serial port of an "headless" Sun Ultra 10
to act as console. Via the command `tip hardwire` I got the console
from the machine as expected. Some time later I had to reboot the
Sun Ultra 10, but when it came to "resetting" in the boot prom, suddenly
the laptop running NetBSD froze and did a reset too :-(

>How-To-Repeat:
	
Try to run as console for a Sun Ultra 10 with a Toshiba Tecra 500CDT
running NetBSD-current and reboot the Sun Ultra 10.

>Fix:
	
I have no idea, sorry.
>Audit-Trail:
>Unformatted:
reset from a Sun Ultra 10 at a console via com0 resets the NetBSD machine too