From: Brad Boyer <flar@allandria.com>
To: Laurent Vivier <Laurent@lvivier.info>
Cc: Finn Thain <fthain@telegraphics.com.au>,
Joshua Juran <jjuran@gmail.com>, Riccardo <riccardo@kaffe.org>,
geert@linux-m68k.org, linux-m68k@vger.kernel.org
Subject: Re: [PATCH] Add SWIM floppy support for m68k Macs.
Date: Wed, 5 Nov 2008 20:09:23 -0800 [thread overview]
Message-ID: <20081106040923.GA17813@cynthia.pants.nu> (raw)
In-Reply-To: <8E70C812-7878-494E-A2D8-66BB7402A74E@lvivier.info>
On Wed, Nov 05, 2008 at 03:32:13PM +0100, Laurent Vivier wrote:
> The SWIM chip can act like an IWM one and there is a procedure to know
> in which mode it is.
That is good to know. Hopefully that can also be used to detect which
chip it is, possibly by checking for a mode change failure.
> If we suppose the SWIM chip on MacII is at the same address than the
> IWM one, we should be able to use this procedure to know if it is an
> IWM or a SWIM.
It would have to be the same address, since the address decoding logic
is part of the bus interface circuits on 68k macs. Each IO chip just
has a chip select and a few address lines based on what I've seen.
Brad Boyer
flar@allandria.com
next prev parent reply other threads:[~2008-11-06 4:10 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-01 9:43 [PATCH] Add SWIM floppy support for m68k Macs Laurent
2008-11-01 18:10 ` Brad Boyer
2008-11-02 0:29 ` Finn Thain
2008-11-02 5:23 ` Brad Boyer
2008-11-02 12:02 ` Laurent Vivier
2008-11-04 18:34 ` Riccardo
2008-11-04 20:06 ` Brad Boyer
2008-11-05 0:58 ` Riccardo
2008-11-05 2:28 ` Brad Boyer
2008-11-05 21:43 ` Riccardo
2008-11-06 4:18 ` Brad Boyer
2008-11-05 6:58 ` Finn Thain
2008-11-05 21:45 ` Riccardo
2008-11-05 7:37 ` Joshua Juran
2008-11-05 10:31 ` Finn Thain
2008-11-05 12:20 ` Joshua Juran
2008-11-05 13:10 ` Finn Thain
2008-11-05 14:32 ` Laurent Vivier
2008-11-06 4:09 ` Brad Boyer [this message]
2008-11-02 6:00 ` Finn Thain
2008-11-02 11:59 ` Laurent Vivier
2008-11-02 8:54 ` Geert Uytterhoeven
2008-11-02 11:21 ` Laurent Vivier
2008-11-02 21:28 ` Brad Boyer
2008-11-03 0:14 ` Finn Thain
2008-11-03 18:58 ` Laurent Vivier
2008-11-09 16:16 ` Geert Uytterhoeven
2008-11-09 21:47 ` Laurent Vivier
2008-11-09 23:05 ` Michael Schmitz
2008-11-10 0:15 ` Finn Thain
2008-11-11 8:52 ` Geert Uytterhoeven
2008-11-11 9:43 ` Finn Thain
2008-11-11 10:21 ` Geert Uytterhoeven
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