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Date: Sun, 14 Mar 2010 13:14:42 -0400
From: David Relson <relson@osagesoftware.com>
To: gentoo-embedded@lists.gentoo.org
Cc: manuel.lauss@googlemail.com
Subject: Re: [gentoo-embedded] High Speed Serial Problem
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On Sun, 14 Mar 2010 17:34:50 +0100
Manuel Lauss wrote:

> David,
> 
> I suggest you post this question to linux-kernel@vger.kernel.org and
> linux-serial@vger.kernel.org
> instead.
> 
> One question though:  does your target have a real (physically real)
> uart chip? There are some x86 systems out there which emulate a 8250
> through SMM code, which exhibit these kinds of failures at high baud
> rates.  Do lower baudrates work?
> 
> Best regards,
>        Manuel Lauss

Hello Manuel,

The UARTs are real and work very very well with DOS (remember the 2.5
errors per 1000 records).

The high speed serial device has a fixed 115KB rate and is
transferring 4000+ characters per second.  With the fixed baud rate,
lower baudrates aren't usable, hence can't be tested.

David