From: Jun Sun <jsun@mvista.com>
To: Steven Seeger <sseeger@stellartec.com>
Cc: linux-mips@linux-mips.org, jsun@mvista.com
Subject: Re: NEC VR4181A
Date: Wed, 12 Feb 2003 22:48:37 -0800 [thread overview]
Message-ID: <20030212224837.D16015@mvista.com> (raw)
In-Reply-To: <027601c2d2bc$8234acd0$3501a8c0@wssseeger>; from sseeger@stellartec.com on Wed, Feb 12, 2003 at 09:30:58AM -0800
On Wed, Feb 12, 2003 at 09:30:58AM -0800, Steven Seeger wrote:
> Julian,
>
> We are doing a project here at work with that board. Are you using the NEC
> Osprey?
Osprey uses Vr4181, which is a different chip from vr4181a.
> I'm happy with this processor although it is a bit slow.
Yes, indeed. Pretty the slowest MIPS CPU I ever have dealt.
> I managed to get
> worst case interrupt latency at 46 microseconds with linux going full blast
> on network and compact flash stuff with our external board. (using RTAI and
> kernel 2.4.18)
Interesting. I was trying to get RT-Linux working at one time
but aborted that effort in the middle.
Jun
next prev parent reply other threads:[~2003-02-13 6:48 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-02-12 17:23 NEC VR4181A Julian Scheel
2003-02-12 17:30 ` Steven Seeger
2003-02-12 17:30 ` Steven Seeger
2003-02-13 6:48 ` Jun Sun [this message]
2003-02-13 13:22 ` Steven Seeger
2003-02-13 13:22 ` Steven Seeger
2003-02-13 17:46 ` Jun Sun
2003-02-14 8:41 ` Stuart Hughes
2003-02-14 12:56 ` Kunihiko IMAI
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