From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Thu, 13 Feb 2003 06:48:44 +0000 (GMT) Received: from gateway-1237.mvista.com ([IPv6:::ffff:12.44.186.158]:38897 "EHLO orion.mvista.com") by linux-mips.org with ESMTP id ; Thu, 13 Feb 2003 06:48:43 +0000 Received: (from jsun@localhost) by orion.mvista.com (8.11.6/8.11.6) id h1D6mb116081; Wed, 12 Feb 2003 22:48:37 -0800 Date: Wed, 12 Feb 2003 22:48:37 -0800 From: Jun Sun To: Steven Seeger Cc: linux-mips@linux-mips.org, jsun@mvista.com Subject: Re: NEC VR4181A Message-ID: <20030212224837.D16015@mvista.com> References: <200302121823.09663.jscheel@activevb.de> <027601c2d2bc$8234acd0$3501a8c0@wssseeger> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <027601c2d2bc$8234acd0$3501a8c0@wssseeger>; from sseeger@stellartec.com on Wed, Feb 12, 2003 at 09:30:58AM -0800 Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 1402 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: jsun@mvista.com Precedence: bulk X-list: linux-mips 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