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?
isa* at piixpcib?
# 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
Disk and tape 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
- lpt(4)
- parallel port driver
- rtfps(4)
- multiplexing serial communications interface
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
Radio receiver devices
Hardware Sensors
- aps(4)
- ThinkPad Active Protection System accelerometer
- 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
- 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
- vga(4)
- VGA graphics driver for wscons
Note that some ISA devices also have newer ISA Plug-and-Play variants. These are listed in isapnp(4).
SEE ALSO
HISTORY
The machine-independent ISA subsystem appeared in OpenBSD 2.0.