ISA(4) | Device Drivers Manual | ISA(4)

# NAME

`isa` —
introduction to machine-independent ISA bus support and drivers

# SYNOPSIS

Attachments are machine-dependent and depend on the bus topology and ISA bus interface of your system. See intro(4) for your system for details.

# DESCRIPTION

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

Your system may support additional ISA devices. Drivers for ISA devices not listed here are machine-dependent. Consult your system's intro(4) for additional information.

# SUPPORTED DEVICES

NetBSD includes machine-independent ISA drivers, sorted by device type and driver name:

## SCSI interfaces

adv
  Advansys SCSI interfaces.
aha
  Adaptec AHA-154x family (154xA, 154xB, 154xC, and 154xCF) and the BusLogic BT54x SCSI interfaces.
ahc
  Adaptec 29xx, 39xx, and other AIC-7xxx-based SCSI interfaces.
aic
  Adaptec AIC-6260 and Adaptec AIC-6360 based SCSI interfaces, including the Adaptec 152x, SoundBlaster SCSI interfaces, and a variety of compatibles.
bha
  BusLogic BT-445 SCSI interfaces.
dpt
  DPT SmartCache/SmartRAID III and IV SCSI interfaces.
esp
  NCR 53C9x, Emulex ESP406, and Qlogic FAS408 SCSI interfaces.
nca
  NCR-5380/NCR-53C400
sea
  Seagate/Future Domain SCSI cards. ST01/02, Future Domain TMC-885, and Future Domain TMC-950.
uha
  Ultrastor 14f SCSI interfaces.
wds
  WD-7000 family of bus-mastering SCSI interfaces.

## Disk and tape controllers

mcd
  Mitsumi CD-ROM drives.
wdc
  Standard Western Digital type hard drive controllers: MFM, RLL, ESDI, and IDE/ATAPI.
wt
  Wangtek and compatible QIC-02 and QIC-36 tape drives.

## Serial and parallel interfaces

ast
  Multi-port serial communications card first made by AST.
boca
  Boca BB100[48] and BB2016 multiplexing serial communications cards.
com
  NS8250-, NS16450-, and NS16550-based serial ports.
cy
  Cyclades Cyclom-4Y, -8Y, and -16Y asynchronous serial communications cards.
ioat
  BOCA Research IOAT66 serial interfaces.
lpt
  Standard ISA parallel port interface.
rtfps
  IBM RT four-port serial interfaces.
tcom
  Byte Runner Technologies TC-400 and TC-800 series serial interfaces.

## Network interfaces

ai
  AT&T StarLan Ethernet interfaces.
ate
  Allied Telesis AT1700 series and RE2000 series Ethernet interfaces.
cs
  Cirrus Logic Crystal CS8900 Ethernet interfaces.
ec
  3Com EtherLink II (3c503) Ethernet interfaces.
ef
  3Com EtherLink II (3c507) Ethernet interfaces.
eg
  3Com EtherLink Plus (3c505) Ethernet interfaces.
el
  3Com EtherLink (3c501) Ethernet interfaces.
ep
  3Com EtherLink III (3c509) Ethernet interfaces.
fmv
  Fujitsu FMV-181 and FMV-182 interfaces.
ix
  Intel EtherExpress/16 Ethernet interfaces.
iy
  Intel i82595-based Ethernet interfaces, including the EtherExpress Pro/10.
lc
  DEC EtherWORKS III Ethernet interfaces (DE203, DE204, and DE205).
le
  Ethernet interfaces based on the AMD LANCE chip, including BICC Isolan, Novell NE2100, Digital DEPCA, and PCnet-ISA.
ne
  Novel NE2000 and compatible Ethernet interfaces.
ntwoc
  SDL Communications Riscom/N2 synchronous serial interfaces.
sm
  SMC91C9x-based Ethernet interfaces.
tr
  TROPIC based token ring interfaces.
we
  Western Digital/SMC 80x3, SMC Elite Ultra, and SMC EtherEZ Ethernet interfaces.

## Sound cards and MIDI interfaces

aria
  Sierra's Aria based sound cards.
cms
  Creative Music System.
ess
  ESS Technology AudioDrive 1788-, 1888-, 1887-, and 888-based sound cards.
gus
  Gravis Ultrasound sound cards.
mpu
  Roland MPU401 (and compatible) MIDI UARTs.
opl
  Yamaha OPL2 and OPL3 FM MIDI synthesizers.
pas
  ProAudio Spectrum sound cards.
sb
  SoundBlaster, SoundBlaster 16, and SoundBlaster Pro sound cards.
wss
  Windows Sound System-compatible sound cards based on the AD1848 and compatible chips.

## Miscellaneous devices

az
  Aztech/PackardBell radio card.
ega
  EGA graphics boards.
lm
  National Semiconductor LM78, LM79 and compatible hardware monitors.
pcdisplay
  PC display adapters.
pcic
  PCI PCMCIA controllers, including the Cirrus Logic GD6729.
pckbc
  PC keyboard controllers.
pcppi
  PC control and timer ports.
pms
  PS/2 auxiliary port mice (including wheel mice).
rt
  AIMS Lab Radiotrack FM radio.
rtii
  AIMS Lab Radiotrack II FM radio.
sf2r
  SoundForte RadioLink SF16-FMR2 FM radio.
soekrisgpio
  Soekris net6501 GPIO and LEDs driver
tcic
  Databook DB86082, DB86084, DB86184, and DB86072 PCMCIA controllers.
vga
  VGA graphics boards.
wbsio
  Winbond LPC Super I/O.

Note that some ISA devices also have newer ISA Plug-and-Play variants. These are listed in isapnp(4). Some i386 platforms use pnpbios(4) to attach ISA devices.

# DIAGNOSTICS

Stray interrupt on IRQ 7
  It means the interrupt controller reported an unmasked interrupt on IRQ 7, but no driver attached to that IRQ `claimed' it.

  There are two reasons this can happen:

  - In anything other than i386, it would almost always mean that there is a driver attached to the IRQ, but it is the wrong driver.
  - On i386, there is the more obscure issue of `default IRQ7's. That is, when a device asserts an IRQ, but the IRQ is deasserted after the PIC latches the interrupt and before the CPU acknowledges it, the PIC just flat out lies about which IRQ it was. It is usually due to a suboptimally coded driver.

# SEE ALSO

adv(4), aha(4), ahc(4), ai(4), aic(4), aria(4), ast(4), ate(4), az(4), bha(4), boca(4), cms(4), com(4), cs(4), cy(4), dpt(4), ec(4), ef(4), eg(4), el(4), ep(4), esp(4), ess(4), fmv(4), gus(4), intro(4), ioat(4), isapnp(4), ix(4), iy(4), joy(4), lc(4), le(4), lm(4), lpt(4), mcd(4), mpu(4), nca(4), ne(4), ntwoc(4), opl(4), pas(4), pcdisplay(4), pcic(4), pckbc(4), pcppi(4), pms(4), pnpbios(4), rt(4), rtfps(4), rtii(4), sb(4), sea(4), sf2r(4), sm(4), soekrisgpio(4), tcic(4), tcom(4), tr(4), uha(4), vga(4), wbsio(4), wd(4), wdc(4), wds(4), we(4), wss(4), wt(4)

# HISTORY

The machine-independent ISA subsystem appeared in NetBSD 1.2.

June 10, 2013 | NetBSD 9.4