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.\"	$OpenBSD: isa.4,v 1.60 2008/03/19 19:33:12 deraadt Exp $
.\"	$NetBSD: isa.4,v 1.19 2000/03/18 16:54:37 augustss Exp $
.\"
.\" Copyright (c) 2000 Theo de Raadt.  All rights reserved.
.\" Copyright (c) 1997 Jason R. Thorpe.  All rights reserved.
.\" Copyright (c) 1997 Jonathan Stone
.\" All rights reserved.
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.Dd February 10, 2013
.Dt ISA 4
.Os
.Sh NAME
.Nm isa
.Nd introduction to ISA bus support
.Sh SYNOPSIS
.Cd "device isa"
.Sh DESCRIPTION
The system includes a machine-independent
.Tn ISA
bus subsystem and several machine-independent
.Tn ISA
device drivers.
.Pp
Note that interrupt mappings on the i386 may require that you configure
your BIOS to reserve the interrupts for these devices as "Legacy ISA".
If such configuration is not done, the system may use those interrupts
for
.Xr pci 4
devices instead.
.Pp
.Dx
provides support for the following devices.
Note that not all architectures support all devices.
.Ss Disk and tape controllers
.Bl -tag -width 12n -offset indent -compact
.It Xr fdc 4
PC architecture floppy disk controller driver
.It Xr nata 4
Generic ATA/ATAPI disk controller driver
.El
.Ss Serial and parallel interfaces
.Bl -tag -width 12n -offset indent -compact
.It Xr lpt 4
Generic printer device driver
.It Xr sio 4
Generic serial controller driver
.El
.Ss Hardware Sensors & Watchdog Timers
.Bl -tag -width 12n -offset indent -compact
.It Xr amdsbwd 4
AMD SB600/SB7xx/SB8xx watchdog timer
.It Xr aps 4
ThinkPad Active Protection System accelerometer
.It Xr ichwd 4
Intel ICH watchdog timer
.It Xr it 4
ITE IT8705F/IT8712F/IT8716F/IT8718F/IT8726F and SiS SiS950
temperature, voltage, and fan sensor with watchdog timer
.It Xr lm 4
National Semiconductor LM78/79/81 temperature, voltage, and fan sensor
.It Xr nsclpcsio 4
National Semiconductor PC87366 LPC Super I/O with GPIO
.It Xr uguru 4
ABIT temperature, voltage and fan sensors
.It Xr wbsio 4
Winbond LPC Super I/O
.El
.Ss Miscellaneous devices
.Bl -tag -width 12n -offset indent -compact
.It Xr atkbdc 4
AT keyboard controller interface
.It Xr joy 4
Joystick device driver
.It Xr orm 4
ISA I/O space option ROM(s) driver
.It Xr ppc 4
Parallel Port Chipset driver
.It Xr syscons 4
System Console driver
.It Xr vga 4
VGA graphics driver
.El
.Sh SEE ALSO
.Xr intro 4