From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from dell-paw-3.cambridge.redhat.com ([195.224.55.237] helo=passion.cambridge.redhat.com) by pentafluge.infradead.org with esmtp (Exim 3.22 #1 (Red Hat Linux)) id 15qqcy-0007mx-00 for ; Tue, 09 Oct 2001 07:44:32 +0100 From: David Woodhouse In-Reply-To: References: <29886.1002609959@redhat.com> To: ebiederman@lnxi.com (Eric W. Biederman) Cc: linux-mtd@lists.infradead.org Subject: Re: Q: Probing for devices > buswidth??? Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Tue, 09 Oct 2001 07:53:40 +0100 Message-ID: <30115.1002610420@redhat.com> Sender: linux-mtd-admin@lists.infradead.org Errors-To: linux-mtd-admin@lists.infradead.org List-Help: List-Post: List-Subscribe: , List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: ebiederman@lnxi.com said: > Just so I understand. There are chips with a 16-bit interface that > you can put in a crippled mode such that they pretend use only an 8 > bit bus. But the id logic is the same as when the are on a 16-bit > bus? Basically, yes. They are 16-bit devices, with the A0 line selecting which 16-bit word you should look at - and all the 'magic' addresses must be placed on the address bus starting at A0. But they decided they wanted to be able to use them with an 8-bit bus, so they added an 'A-1' address line too. > I'm just trying to comprehend this weird situation. Do yourself a favour - don't. Just accept it. Or do me a favour and take responsibility for it from now on :) -- dwmw2