1.\" $NetBSD: nell.4,v 1.11 2008/04/30 13:10:56 martin Exp $ 2.\" 3.\" Copyright (c) 2002 The NetBSD Foundation, Inc. 4.\" All rights reserved. 5.\" 6.\" This code is derived from software contributed to The NetBSD Foundation 7.\" by Martin Husemann <martin@NetBSD.org>. 8.\" 9.\" Redistribution and use in source and binary forms, with or without 10.\" modification, are permitted provided that the following conditions 11.\" are met: 12.\" 1. Redistributions of source code must retain the above copyright 13.\" notice, this list of conditions and the following disclaimer. 14.\" 2. Redistributions in binary form must reproduce the above copyright 15.\" notice, this list of conditions and the following disclaimer in the 16.\" documentation and/or other materials provided with the distribution. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28.\" POSSIBILITY OF SUCH DAMAGE. 29.\" 30.\" 31.Dd January 7, 2004 32.Dt NELL 4 sparc 33.Os 34.Sh NAME 35.Nm nell 36.Nd sbus pcmcia bridge 37.Sh SYNOPSIS 38# only needed for 32bit sparcs (remove the options line on sparc64): 39.Cd "options FULL_SPARC_BUS_SPACE" 40.Cd "nell* at sbus? slot ? offset ? flags 0" 41.Cd "pcmcia* at nell? controller ? socket ?" 42.Sh DESCRIPTION 43The 44.Nm 45is a pcmcia bridge for the sbus. 46It is also known as STP4020, the name 47of the chipset used to implement it, and has SUN part number 501-2367. 48.Pp 49The firmware assigns two interrupt levels to the nell, but the driver only 50needs a single interrupt. 51Depending on distribution of interrupt levels on your machine you might 52prefer the driver to use either the first (use flags value 0) or the second 53(use flags value 1). 54.Sh KERNEL THREAD 55Each 56.Nm 57instance creates a kernel thread, named like the instance. 58This thread is used to watch for card insertions and removals, and 59handling the attachment and initialization of the card's driver. 60.Sh SEE ALSO 61.Xr pcmcia 4 , 62.Xr sbus 4 63