V8.x-PRE2 Serious PUC problem - Heads Up!
Jeremy Chadwick
freebsd at jdc.parodius.com
Thu Nov 19 18:29:00 UTC 2009
On Thu, Nov 19, 2009 at 09:34:01AM -0500, Mike Tancsa wrote:
> At 09:27 AM 11/19/2009, Karl Denninger wrote:
> >It's not.
> >
> >What does that do?
>
> From the man page,
>
> With flags encoded as:
> 0x00010 device is potential system console
> 0x00080 use this port for remote kernel debugging
> 0x00100 set RX FIFO trigger level to ``low'' (NS8250 only)
> 0x00200 set RX FIFO trigger level to ``medium low'' (NS8250 only)
> 0x00400 set RX FIFO trigger level to ``medium high'' (default, NS8250
> only)
> 0x00800 set RX FIFO trigger level to ``high'' (NS8250 only)
>
> You might still want to try adjusting how fast the FIFOs are flushed
> to see if thats your issue.
Has anyone considered involving Marcel Moolenaar in this conversation,
given that he's responsible for uart(4)? :-) I've CC'd him here.
--
| Jeremy Chadwick jdc at parodius.com |
| Parodius Networking http://www.parodius.com/ |
| UNIX Systems Administrator Mountain View, CA, USA |
| Making life hard for others since 1977. PGP: 4BD6C0CB |
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