From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 10840 invoked by alias); 16 Oct 2009 17:01:23 -0000 Received: (qmail 10718 invoked by uid 22791); 16 Oct 2009 17:01:21 -0000 X-SWARE-Spam-Status: No, hits=-2.1 required=5.0 tests=AWL,BAYES_00 X-Spam-Check-By: sourceware.org Received: from outbound.mse12.exchange.ms (HELO outbound.mse12.exchange.ms) (216.52.164.187) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Fri, 16 Oct 2009 17:01:16 +0000 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Subject: RE: STRATA v2 buffered programming fix Date: Fri, 16 Oct 2009 17:01:00 -0000 Message-ID: <8DF19BDE1EAEBE408BD5D46E1CD4AF8DFEB4BB@mse12be1.mse12.exchange.ms> In-Reply-To: References: From: "Kurt Siedenburg" To: "Edgar Grimberg" , "Bart Veer" Cc: X-IsSubscribed: yes Mailing-List: contact ecos-patches-help@ecos.sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Post: List-Help: , Sender: ecos-patches-owner@ecos.sourceware.org X-SW-Source: 2009-10/txt/msg00022.txt.bz2 Edgar, a while ago I got Nymonyx 65nm P30 chips as a replacement for older Strata chips. One problem I encountered is an incompatibility to its predecessors: The buffer size for programmed operations has increased to 512 words (that's not yet incompatible). However you can only use the full buffer size if it is naturally aligned. The datasheet reads "The maximum buffer size would be 256-word if the misaligned address range is crossing a 512-word boundary during programming." Maybe this is the source of your troubles. It definitly took me a while to find this piece of information. I had suggested a patch for this issue a while back (Mar 5/6 2009) on this list. I didn't check/follow up on it to see if it ever made it to the repository. I recall vaguely that someone else contributed another patch in this area sometime later. Maybe that patch addresses the issue above as well. Best, Kurt