Received: from PACIFIC-CARRIER-ANNEX.MIT.EDU by po7.MIT.EDU (5.61/4.7) id AA05363; Mon, 18 Dec 95 15:55:21 EST
Received: from psuvax1.cse.psu.edu by MIT.EDU with SMTP
	id AA03433; Mon, 18 Dec 95 15:55:20 EST
Received: by psuvax1.cse.psu.edu id <34188>; Mon, 18 Dec 1995 15:32:40 -0500
Received: from plan9.cs.york.ac.uk ([144.32.33.120]) by psuvax1.cse.psu.edu with SMTP id <34187>; Mon, 18 Dec 1995 15:31:57 -0500
From: forsyth@plan9.cs.york.ac.uk
To: 9fans@cse.psu.edu
Date: 	Mon, 18 Dec 1995 15:32:05 -0500
Subject: 3c589 on a thinkpad 701
Message-Id: <95Dec18.153157est.34187@psuvax1.cse.psu.edu>
Sender: owner-9fans@cse.psu.edu
Precedence: bulk
Reply-To: 9fans@cse.psu.edu

the quick hack to get the 3c589 (and presumably almost
anything else) to work on the thinkpad was to change
	p = (uchar*)(KZERO+0xC8000);
in /sys/src/9/pc/main.c to
	p = (uchar*)(KZERO+0xD0000);
i'll work out something more general later.

the problem is that 0xC8000 appears to be writable (it's probably shadowing
something), but nothing else can be mapped over it.
i couldn't find a configuration control screen to enable or disable shadowing.

does anyone happen to know
	- which sound chip is used in the 701?
	- which infrared chipset is used for the irDA interface?