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Date:      Tue, 23 May 2006 21:18:50 +0930
From:      "Daniel O'Connor" <doconnor@gsoft.com.au>
To:        Peter Jeremy <peterjeremy@optushome.com.au>
Cc:        freebsd-stable@freebsd.org
Subject:   Re: Odd RS232 problem
Message-ID:  <200605232118.59080.doconnor@gsoft.com.au>
In-Reply-To: <20060523101550.GC769@turion.vk2pj.dyndns.org>
References:  <200605131413.17020.doconnor@gsoft.com.au> <200605231923.21263.doconnor@gsoft.com.au> <20060523101550.GC769@turion.vk2pj.dyndns.org>

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On Tuesday 23 May 2006 19:45, Peter Jeremy wrote:
> On Tue, 2006-May-23 19:23:20 +0930, Daniel O'Connor wrote:
> >I would hope that 9600 baud wouldn't be *too* fast for a 2GHz CPU :(
>
> That depends on what else is sharing the IRQ.  PLIP can give you
> 10's of msec of latency.  PIO disks can also destroy latency as
> can NE2000-style NICs.

Hmm, well I just realised I don't actually know what it IS sharing an IRQ w=
ith=20
as puc/sio don't say :(

I don't have any ISA hardware or PIO disks in the system. I do have a paral=
lel=20
port which I am not using though.

=2D-=20
Daniel O'Connor software and network engineer
for Genesis Software - http://www.gsoft.com.au
"The nice thing about standards is that there
are so many of them to choose from."
  -- Andrew Tanenbaum
GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C

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