Date: Sun, 20 Jun 1999 23:18:46 -0600 From: Wes Peters <wes@softweyr.com> To: Greg Lehey <grog@lemis.com> Cc: FreeBSD current users <FreeBSD-current@FreeBSD.ORG>, FreeBSD Hackers <hackers@FreeBSD.ORG> Subject: Re: Remote serial gdb--status? Message-ID: <376DCB36.27D3177A@softweyr.com> References: <19990618114450.Q9893@freebie.lemis.com> <376AA1E6.F529ED99@softweyr.com> <19990621091742.U6820@freebie.lemis.com>
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Greg Lehey wrote:
> On Friday, 18 June 1999 at 13:45:42 -0600, Wes Peters wrote:
> > Greg Lehey wrote:
> >>
> >> I've been away from work for several weeks, and I now find that I can
> >> no longer start remote serial gdb. I am using sio0 on the debugged
> >> machine side, and sio1 on the debugging machine side. Here are the
> >> relevant dmesg outputs:
> >>
> >> [...]
> >
> > I think you need flags 0x50 (instead of 0x90) on panic. From sio(4):
> >
> > [...]
>
> In fact, it was all OK. The serial port seems to be flaky. It works
> OK at 9600 bps, but drops characters at 38400. I'm still
> investigating whether this is hardware or software: it seems to work
> fine in normal mode, but when it's in serial debug mode it can often
> drop two characters at a time, and there's no overrun indication.
Ick. Is this a port on the motherboard? I'd try a known good card
if you have one about.
--
"Where am I, and what am I doing in this handbasket?"
Wes Peters Softweyr LLC
http://www.softweyr.com/~softweyr wes@softweyr.com
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