From: David Woodhouse <dwmw2@infradead.org>
To: ebiederman@lnxi.com (Eric W. Biederman)
Cc: linux-mtd@lists.infradead.org
Subject: Re: Q: Probing for devices > buswidth???
Date: Tue, 09 Oct 2001 07:53:40 +0100 [thread overview]
Message-ID: <30115.1002610420@redhat.com> (raw)
In-Reply-To: <m3wv25gvdq.fsf@DLT.linuxnetworx.com>
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
next prev parent reply other threads:[~2001-10-09 6:44 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-10-09 5:23 Q: Probing for devices > buswidth??? Eric W. Biederman
2001-10-09 6:45 ` David Woodhouse
2001-10-09 6:50 ` Eric W. Biederman
2001-10-09 6:53 ` David Woodhouse [this message]
2001-10-09 7:04 ` Eric W. Biederman
2001-10-09 13:19 ` Kenneth Johansson
2001-10-09 13:22 ` David Woodhouse
2001-10-09 13:56 ` Kenneth Johansson
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