From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 20920 invoked by alias); 1 Jun 2006 18:39:03 -0000 Received: (qmail 20858 invoked by uid 22791); 1 Jun 2006 18:39:03 -0000 X-Spam-Check-By: sourceware.org Received: from www.embedded-zone.com (HELO embedded-zone.com) (70.91.86.210) by sourceware.org (qpsmtpd/0.31) with ESMTP; Thu, 01 Jun 2006 18:39:01 +0000 Received: from [192.168.0.100] (70-91-86-212-washingtondc-dc.hfc.comcastbusiness.net [70.91.86.212] (may be forged)) by embedded-zone.com (8.12.5/8.12.5) with ESMTP id k51I4cfk026053; Thu, 1 Jun 2006 14:04:39 -0400 Message-ID: <447F2C35.9070402@embedded-zone.com> Date: Thu, 01 Jun 2006 18:39:00 -0000 From: "Moussa A. Ba" User-Agent: Thunderbird 1.5.0.2 (Windows/20060308) MIME-Version: 1.0 To: "Moussa A. Ba" , ecos-discuss@ecos.sourceware.org References: <447F1846.7050007@embedded-zone.com> <20060601180003.GL2478@lunn.ch> In-Reply-To: <20060601180003.GL2478@lunn.ch> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-IsSubscribed: yes Mailing-List: contact ecos-discuss-help@ecos.sourceware.org; run by ezmlm Precedence: bulk List-Subscribe: List-Archive: List-Post: List-Help: , Sender: ecos-discuss-owner@ecos.sourceware.org Subject: Re: [ECOS] ECOS Memory Requirements X-SW-Source: 2006-06/txt/msg00012.txt.bz2 Are these high memory requirement because the code is loaded from flash to RAM and then executed or is it just that ECOS data structures need so much RAM (not that much compared to bigger processors). Moussa Andrew Lunn wrote: > On Thu, Jun 01, 2006 at 12:39:34PM -0400, Moussa A. Ba wrote: > >> I am porting ecos to an OKI 4061 with 128K Flash and 16K RAM. Can this >> handle ecos? If so how much of that space will still remain for >> application code? >> > > 128K flash is O.K. > > 16K RAM is probably too small. I would say that 64K RAM is a > reasonable minimum. Some things will be possible with 32K RAM. I think > with 16K RAM you are going to have problems. > > Maybe take a look at the ATMEL AT91SAM7 family. There are devices with > 256K Flash and 64K RAM with eCos support already in anoncvs. There are > also similar devices from Philips in there LPC family. > > Andrew > -- Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss