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.\"	$OpenBSD: isa.4,v 1.82 2023/04/27 19:10:53 jmc 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.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
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.\"    documentation and/or other materials provided with the distribution.
.\" 3. All advertising materials mentioning features or use of this software
.\"    must display the following acknowledgements:
.\"      This product includes software developed by Jonathan Stone
.\" 4. The name of the author may not be used to endorse or promote products
.\"    derived from this software without specific prior written permission
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.Dd $Mdocdate: April 27 2023 $
.Dt ISA 4
.Os
.Sh NAME
.Nm isa , isadma
.Nd introduction to ISA bus support
.Sh SYNOPSIS
.Cd "# amd64 and i386"
.Cd "isa* at amdpcib?"
.Cd "isa0 at tcpcib?"
.Cd "isa0 at mainbus0"
.Cd "isa0 at pcib?"
.Cd "isadma0 at isa?"
.Pp
.Cd "# i386"
.Cd "isa0 at ichpcib?"
.Cd "isa* at glxpcib?"
.Cd "isa0 at gscpcib?"
.Pp
.Cd "# alpha"
.Cd "isa* at pceb?"
.Cd "isa* at sio?"
.Cd "isadma0 at isa?"
.Pp
.Cd "# loongson"
.Cd "isa* at glxpcib?"
.Sh DESCRIPTION
The system includes a machine-independent ISA bus subsystem
and several machine-independent ISA device drivers.
.Pp
Attachments are machine-dependent and depend on the bus topology and
ISA bus interface of the system.
Drivers able to use DMA attach at
.Nm isadma ;
otherwise they attach at
.Nm isa .
.Pp
Note that interrupt mappings on the i386 may require that the BIOS
be configured 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
or
.Xr isapnp 4
devices instead.
.Pp
.Ox
provides support for the following devices.
Note that not all architectures support all devices.
.Ss SCSI controllers
.Bl -tag -width 12n -offset ind -compact
.It Xr ahc 4
Adaptec VL/EISA/PCI SCSI interface
.It Xr aic 4
Adaptec AIC-6260 and AIC-6360 SCSI interface
.It Xr uha 4
Ultrastor SCSI interface
.It Xr wds 4
WD7000 compatible ISA SCSI interface
.El
.Ss Disk and tape controllers
.Bl -tag -width 12n -offset ind -compact
.It Xr fdc 4
NEC765 compatible floppy disk driver
.It Xr wdc 4
Standard Western Digital type hard drive controllers: MFM, RLL, ESDI,
and IDE/ATAPI.
See also the
.Xr pciide 4
device driver which is used instead on machines with PCI IDE controllers.
.El
.Ss Serial and parallel interfaces
.Bl -tag -width 12n -offset ind -compact
.It Xr addcom 4
Addonics FlexPort 8S serial communication cards
.It Xr ast 4
multiplexing serial communications interface
.It Xr boca 4
multiplexing serial communications interface
.It Xr com 4
serial communications interface
.It Xr cy 4
Cyclades Cyclom-{4, 8, 16}Y asynchronous comms board device driver
.It Xr hsq 4
multiplexing serial communications interface
.It Xr lpt 4
parallel port driver
.El
.Ss Network interfaces
.Bl -tag -width 12n -offset ind -compact
.It Xr ec 4
3Com EtherLink II (3c503) Ethernet device
.It Xr ef 4
3Com Fast EtherLink ISA (3c515) 10/100 Ethernet device
.It Xr eg 4
3Com EtherLink Plus Ethernet (3c505) Ethernet device
.It Xr el 4
3Com EtherLink (3C501) Ethernet device
.It Xr ep 4
3Com EtherLink III and Fast EtherLink III 10/100 Ethernet device
.It Xr ex 4
Intel EtherExpress Pro/10 and Pro/10+ Ethernet device
.It Xr ie 4
Intel i82586/i82596 Ethernet device
.It Xr lc 4
DEC EtherWORKS III 10/100 Ethernet device
.It Xr le 4
AMD LANCE Ethernet device
.It Xr ne 4
NE2000 and compatible 10/100 Ethernet device
.It Xr sm 4
SMC91C9x and SMC91C1xx-based 10/100 Ethernet device
.It Xr we 4
Western Digital/SMC WD80x3, SMC Elite Ultra, and SMC EtherEZ Ethernet device
.El
.Ss Sound cards
.Bl -tag -width 12n -offset ind -compact
.It Xr ess 4
ESS Technology AudioDrive family audio device
.It Xr gus 4
Gravis UltraSound/UltraSound MAX audio device
.It Xr mpu 4
Roland/Yamaha MPU401 MIDI UART device
.It Xr pas 4
Media Vision Pro AudioSpectrum audio device
.It Xr sb 4
SoundBlaster family audio device
.El
.Ss Hardware Sensors
.Bl -tag -width 12n -offset ind -compact
.It Xr aps 4
ThinkPad Active Protection System accelerometer
.It Xr asmc 4
Apple System Management Controller (SMC)
.It Xr fins 4
Fintek F71805F LPC Super I/O
.It Xr it 4
ITE IT87xxF 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 schsio 4
SMSC SCH311x LPC Super I/O
.It Xr uguru 4
ABIT temperature, voltage and fan sensors
.It Xr viasio 4
VIA VT1211 LPC Super I/O
.It Xr wbsio 4
Winbond LPC Super I/O
.El
.Ss Miscellaneous devices
.Bl -tag -width 12n -offset ind -compact
.It Xr gscsio 4
National Semiconductor Geode SC1100 I2C controller
.It Xr isagpio 4
ISA I/O mapped as GPIO
.It Xr joy 4
games adapter
.It Xr lms 4
Logitech-style bus mouse driver
.It Xr mms 4
Microsoft-style bus mouse driver
.It Xr npx 4
Numeric Processing Extension coprocessor and emulator
.It Xr pcdisplay 4
PC display adapter driver for wscons
.It Xr pcic 4
ISA PCMCIA controllers
.It Xr pckbc 4
PC (ISA) keyboard controller driver
.It Xr pcppi 4
PC (ISA) control and timer port driver
.It Xr skgpio 4
Soekris net6501 GPIO and LEDs driver
.It Xr tcic 4
Databook PCMCIA controller driver
.It Xr vga 4
VGA graphics driver for wscons
.It Xr ykbec 4
Ene Technology KB3310B embedded controller chip
.El
.Pp
Note that some ISA devices also have newer ISA Plug-and-Play variants.
These are listed in
.Xr isapnp 4 .
.Sh SEE ALSO
.Xr intro 4 ,
.Xr isapnp 4
.Sh HISTORY
The machine-independent ISA subsystem appeared in
.Ox 2.0 .