ISA(4) - Device Drivers Manual

ISA(4) - Device Drivers Manual #

ISA(4) - Device Drivers Manual

NAME #

isa, isadma - introduction to ISA bus support

SYNOPSIS #

# amd64 and i386 isa* at amdpcib? isa0 at tcpcib? isa0 at mainbus0 isa0 at pcib? isadma0 at isa?

# i386 isa0 at ichpcib? isa* at glxpcib? isa0 at gscpcib?

# alpha isa* at pceb? isa* at sio? isadma0 at isa?

# loongson isa* at glxpcib?

DESCRIPTION #

The system includes a machine-independent ISA bus subsystem and several machine-independent ISA device drivers.

Attachments are machine-dependent and depend on the bus topology and ISA bus interface of the system. Drivers able to use DMA attach at isadma; otherwise they attach at isa.

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 pci(4) or isapnp(4) devices instead.

OpenBSD provides support for the following devices. Note that not all architectures support all devices.

SCSI controllers #

ahc(4)

Adaptec VL/EISA/PCI SCSI interface

aic(4)

Adaptec AIC-6260 and AIC-6360 SCSI interface

uha(4)

Ultrastor SCSI interface

wds(4)

WD7000 compatible ISA SCSI interface

Disk and tape controllers #

fdc(4)

NEC765 compatible floppy disk driver

wdc(4)

Standard Western Digital type hard drive controllers: MFM, RLL, ESDI, and IDE/ATAPI. See also the pciide(4) device driver which is used instead on machines with PCI IDE controllers.

Serial and parallel interfaces #

addcom(4)

Addonics FlexPort 8S serial communication cards

ast(4)

multiplexing serial communications interface

boca(4)

multiplexing serial communications interface

com(4)

serial communications interface

cy(4)

Cyclades Cyclom-{4, 8, 16}Y asynchronous comms board device driver

hsq(4)

multiplexing serial communications interface

lpt(4)

parallel port driver

Network interfaces #

ec(4)

3Com EtherLink II (3c503) Ethernet device

ef(4)

3Com Fast EtherLink ISA (3c515) 10/100 Ethernet device

eg(4)

3Com EtherLink Plus Ethernet (3c505) Ethernet device

el(4)

3Com EtherLink (3C501) Ethernet device

ep(4)

3Com EtherLink III and Fast EtherLink III 10/100 Ethernet device

ex(4)

Intel EtherExpress Pro/10 and Pro/10+ Ethernet device

ie(4)

Intel i82586/i82596 Ethernet device

lc(4)

DEC EtherWORKS III 10/100 Ethernet device

le(4)

AMD LANCE Ethernet device

ne(4)

NE2000 and compatible 10/100 Ethernet device

sm(4)

SMC91C9x and SMC91C1xx-based 10/100 Ethernet device

we(4)

Western Digital/SMC WD80x3, SMC Elite Ultra, and SMC EtherEZ Ethernet device

Sound cards #

ess(4)

ESS Technology AudioDrive family audio device

gus(4)

Gravis UltraSound/UltraSound MAX audio device

mpu(4)

Roland/Yamaha MPU401 MIDI UART device

pas(4)

Media Vision Pro AudioSpectrum audio device

sb(4)

SoundBlaster family audio device

Hardware Sensors #

aps(4)

ThinkPad Active Protection System accelerometer

asmc(4)

Apple System Management Controller (SMC)

fins(4)

Fintek F71805F LPC Super I/O

it(4)

ITE IT87xxF and SiS SiS950 temperature, voltage, and fan sensor with watchdog timer

lm(4)

National Semiconductor LM78/79/81 temperature, voltage, and fan sensor

nsclpcsio(4)

National Semiconductor PC87366 LPC Super I/O with GPIO

schsio(4)

SMSC SCH311x LPC Super I/O

uguru(4)

ABIT temperature, voltage and fan sensors

viasio(4)

VIA VT1211 LPC Super I/O

wbsio(4)

Winbond LPC Super I/O

Miscellaneous devices #

gscsio(4)

National Semiconductor Geode SC1100 I2C controller

isagpio(4)

ISA I/O mapped as GPIO

joy(4)

games adapter

lms(4)

Logitech-style bus mouse driver

mms(4)

Microsoft-style bus mouse driver

npx(4)

Numeric Processing Extension coprocessor and emulator

pcdisplay(4)

PC display adapter driver for wscons

pcic(4)

ISA PCMCIA controllers

pckbc(4)

PC (ISA) keyboard controller driver

pcppi(4)

PC (ISA) control and timer port driver

skgpio(4)

Soekris net6501 GPIO and LEDs driver

tcic(4)

Databook PCMCIA controller driver

vga(4)

VGA graphics driver for wscons

ykbec(4)

Ene Technology KB3310B embedded controller chip

Note that some ISA devices also have newer ISA Plug-and-Play variants. These are listed in isapnp(4).

SEE ALSO #

intro(4), isapnp(4)

HISTORY #

The machine-independent ISA subsystem appeared in OpenBSD 2.0.

OpenBSD 7.5 - April 27, 2023