>From: frank@fwi.uva.nl (Frank van der Linden)
>Date: Tue, 27 Aug 1996 11:17:09 +0200 (MET DST)

>i386_iopl has been in there since 1.1; 1.0 had a hack that gave you
>I/O port access if you opened /dev/io (minor device 14 of the mm driver)
>for writing. I believe it was also temporary linked to minor dev 0 (/dev/mem),
>but never in an official release. So if you want to make it work on 1.0,
>opening /dev/io for writing first should do it.

FYI, /dev/io still works in 1.2_BETA.  Some code of mine, which I
haven't bothered to port to i386_iopl() yet, uses it.  You may need
COMPAT_10 in your config.
-- 
Mike Long <mike.long@analog.com>     <URL:http://www.shore.net/~mikel>
VLSI Design Engineer         finger mikel@shore.net for PGP public key
Analog Devices, CPD Division          CCBF225E7D3F7ECB2C8F7ABB15D9BE7B
Norwood, MA 02062 USA       (eq (opinion 'ADI) (opinion 'mike)) -> nil