From s.kr713@yahoo.com Sat May 26 07:38:20 2012 Received: from nm24-vm2.bullet.mail.ne1.yahoo.com ([98.138.91.212]) by stoneboat.aleph1.co.uk with smtp (Exim 4.72) (envelope-from ) id 1SYAdl-0000eH-U7 for yaffs@lists.aleph1.co.uk; Sat, 26 May 2012 07:38:20 +0100 Received: from [98.138.90.50] by nm24.bullet.mail.ne1.yahoo.com with NNFMP; 26 May 2012 06:38:11 -0000 Received: from [98.138.88.233] by tm3.bullet.mail.ne1.yahoo.com with NNFMP; 26 May 2012 06:38:11 -0000 Received: from [127.0.0.1] by omp1033.mail.ne1.yahoo.com with NNFMP; 26 May 2012 06:38:11 -0000 X-Yahoo-Newman-Property: ymail-3 X-Yahoo-Newman-Id: 658848.82405.bm@omp1033.mail.ne1.yahoo.com Received: (qmail 87687 invoked by uid 60001); 26 May 2012 06:38:11 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s1024; t=1338014291; bh=HOGn5/2EVYxiH8ba7Puxe61+kzK55TSQnP3ABSENKO0=; h=X-YMail-OSG:Received:X-Mailer:Message-ID:Date:From:Reply-To:Subject:To:MIME-Version:Content-Type; b=LRbO7nnk6LeCMg03FNTa0GgTS3OY6Jlw88QoSEfSv/clGnZK8EjaKg1vAPSWXbDE40EYA0QtqvwPYsDaK6YqoY6onsFIi5/5W+cwZQmBn/Q/OyrbBRxDQpToDwpePD28SNfSqp4hk0WXSZlibgw+yEuGHocKNQYxoxI6s0/c+DI= DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=X-YMail-OSG:Received:X-Mailer:Message-ID:Date:From:Reply-To:Subject:To:MIME-Version:Content-Type; b=Vz7QMN7D0/4nYQcsJpSmTZ65oTLzfAAn+86kgcqfRoip6MVyMslMe8HBJ33Tazt+i6lJt9CZgrLq+3a88a2x/BXF6DHrz3Yej/I0oePcR4HeHevJRgcv9WMsRGmX13oxJXnBVFXf3ADzaXPihUkFdDA0sOA71ItX35hk6I2JlTg=; X-YMail-OSG: Odrn10wVM1njA7.ilggOgVqwHrvH7ygBbtEq3Wgn6YLNO4W jLMx.T9iZJz9jRJWkfSj57lZW6Pc4nj0dJJqDNklvEDgVDZdu306.mZfita_ gu9j.H2KjLSxNG6XP5Tqu24jsEOu.WGXae9hK8V..jEQfr94GRmU8Z4kkYub S__bOYx4qVtIHO6F1sEyFB5GdLBxlINQ6iCRyt4LZM6_Tqi..4VHwO4xQDgy eFJv1gE7VF8LQ9nkiNA9oovq21pJjtcir8lDhxIeq8_O4IEn.gOtWfRCfz1v HVcz4p8mWzD0iPPPhkn8JVNaSOberGgHg2QohR7NPc00E_FNKtG_fsRlrLR_ LZ67Ac_445KbDVFSOpFdtC_acwYlv6E107ivNr6GrsDCxaIUVLx1hvXEalg- - Received: from [217.218.56.12] by web121201.mail.ne1.yahoo.com via HTTP; Fri, 25 May 2012 23:38:11 PDT X-Mailer: YahooMailWebService/0.8.118.349524 Message-ID: <1338014291.23453.YahooMailNeo@web121201.mail.ne1.yahoo.com> Date: Fri, 25 May 2012 23:38:11 -0700 (PDT) From: "S. K." To: "yaffs@lists.aleph1.co.uk" MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="1402361269-1149551554-1338014291=:23453" X-SA-Exim-Connect-IP: 98.138.91.212 X-SA-Exim-Mail-From: s.kr713@yahoo.com X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on stoneboat.aleph1.co.uk X-Spam-Level: ** X-Spam-Status: No, score=2.4 required=4.5 tests=AWL,BAYES_20, FREEMAIL_ENVFROM_END_DIGIT,FREEMAIL_FROM,FREEMAIL_REPLYTO_END_DIGIT, HTML_MESSAGE, RCVD_IN_DNSWL_NONE, REPTO_QUOTE_YAHOO autolearn=no version=3.3.1 X-SA-Exim-Version: 4.2.1 (built Mon, 22 Mar 2010 06:51:10 +0000) X-SA-Exim-Scanned: Yes (on stoneboat.aleph1.co.uk) Subject: [Yaffs] yaffs2 ECC algorithm X-BeenThere: yaffs@lists.aleph1.co.uk X-Mailman-Version: 2.1.13 Precedence: list Reply-To: "S. K." List-Id: Discussion of YAFFS NAND flash filesystem List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 26 May 2012 06:38:21 -0000 --1402361269-1149551554-1338014291=:23453 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Hello everyone!=0A=0AI have already mounted yaffs2 on my ubuntu12.04 with n= and simulator .There is something not clear to me. Yaffs2 has ECC algorithm= but, Where it will apply?=0A=0AI want to check performance of its ECC algo= rithm on nand simulator and on flash device. can you help me exactly what I= have to do?=0A=0Aand another question: I understood that flash memories ca= n be SLC or MLC. SLC uses binary algorithms and=A0 MLC uses nonbinary one. = Is it correct? Is it influence the ECC algorithm? If yes what is the yaffs = ECC algorithm?(Hamming or ...) what kind of flashs does yaffs support?(simu= lator and device)=0A --1402361269-1149551554-1338014291=:23453 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable
Hello everyone!
<= br>
I have already mounted yaffs2 on my ubuntu12.04 with nand sim= ulator .There is something not clear to me. Yaffs2 has ECC algorithm but, W= here it will apply?

I want to check performance of= its ECC algorithm on nand simulator and on flash device. can you help me e= xactly what I have to do?

and another question: I = understood that flash memories can be SLC or MLC. SLC uses binary algorithm= s and  MLC uses nonbinary one. Is it correct? Is it influence the ECC = algorithm? If yes what is the yaffs ECC algorithm?(Hamming or ...) what kin= d of flashs does yaffs support?(simulator and device)
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