[Thumbgps-devel] Navisys GR-601W

[Gary E. Miller]

Yo Jim!

On Mon, 24 Sep 2012 20:49:42 -0500
Jim Thompson <jim at netgate.com> wrote:

> 
> On Sep 24, 2012, at 5:32 PM, Gary E. Miller <gem at rellim.com> wrote:
> 
> > Yo Jim!
> > 
> > On Sun, 23 Sep 2012 00:07:43 -0500
> > Jim Thompson <jim at netgate.com> wrote:
> > 
> >> They don't work that we'll on FreeBSD. 
> > 
> > Really?  First I've heard of it.  What's the issue?
> 
> In a word: jitter

And how much jitter?  The lack of RFC2783 should not be noticeable since
the jitter on the USB serial is so large.  RFC2783 helps in the
micro Second range and the USB serial is in the milli Second range.

So with, and without you are going to get about 1 milli Second jitter.

So, what problem are you pointing up with *BSD?

> Compare:
> http://fxr.watson.org/fxr/source/dev/uart/uart_core.c?v=FREEBSD9
> and
> http://fxr.watson.org/fxr/source/dev/sio/sio.c?v=FREEBSD9
> and
> http://fxr.watson.org/fxr/source/pc98/cbus/sio.c?v=FREEBSD9
> 
> to anything found in
> 
> http://fxr.watson.org/fxr/source/dev/usb/serial/?v=FREEBSD9

Not sure what you are trying to show me.

RGDS
GARY
---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97701
	gem at rellim.com  Tel:+1(541)382-8588
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