ISA(4)                    OpenBSD Programmer's Manual                   ISA(4)

NAME
     isa - introduction to ISA bus support

SYNOPSIS
     isa0 at mainbus0
     isa0 at pcib?

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

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

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

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

SUPPORTED DEVICES
     At least the following devices are supported:

   SCSI controllers

        aha(4)   Adaptec AHA-154x family (154xA, 154xB, 154xC, and 154xCF) and
                 the BusLogic BT54x SCSI interfaces.

        aic(4)   Adaptec AIC-6260 and Adaptec AIC-6360 based SCSI interfaces,
                 including the Adaptec 152x, SoundBlaster SCSI interfaces, and
                 a variety of compatibles.

        bt(4)    BusLogic BT-445 SCSI interfaces.

        dpt(4)   DPT SmartCache/SmartRAID III and IV SCSI interfaces.

        sea(4)   Seagate/Future Domain SCSI cards.  ST01/02, Future Domain
                 TMC-885, and Future Domain TMC-950.

        uha(4)   Ultrastor 14f SCSI interfaces.

        wds(4)   WD-7000 family of bus-mastering SCSI interfaces.

   Disk and tape controllers

        mcd(4)   Mitsumi CD-ROM drives.

        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 con-
                 trollers.

        wt(4)    Wangtek and compatible QIC-02 and QIC-36 tape drives.

   Serial and parallel interfaces

        com(4), pccom(4)
                 NS8250, NS16450, NS16550, ST16550, and TI16750 serial driver.
                 The pccom(4) driver is used on the i386; all the rest use

                 com(4).

        addcom(4)
                 Addonics FlexPort 8S serial communication cards.

        ast(4)   Multi-port serial communications card first made by AST.

        boca(4)  Boca BB100[48] and BB2016 multiplexing serial communications
                 cards.

        cy(4)    Cyclades Cyclom-4Y, -8Y, and -16Y asynchronous serial commu-
                 nications cards.

        lpt(4)   Standard ISA parallel port interface.

        rtfps(4)
                 IBM RT four-port serial cards.

   Network interfaces

        ec(4)    3Com Etherlink II (3c503) Ethernet interfaces.

        ef(4)    3Com Fast Etherlink III (3c515) Ethernet interfaces.

        eg(4)    3Com Etherlink Plus (3c505) Ethernet interfaces.

        el(4)    3Com Etherlink (3c501) Ethernet interfaces.

        ep(4)    3Com Etherlink III (3c509) Ethernet interfaces.

        ie(4)    Ethernet interfaces based on Intel 82586 Ethernet chip, in-
                 cluding AT&T Starlan-10, AT&T EN100, AT&T Starlan Fibre, and
                 3Com 3c507.

        lc(4)    DEC EtherWORKS III (DE203, DE204 & DE205) Ethernet inter-
                 faces.

        le(4)    Ethernet interfaces based on the AMD LANCE chip, including
                 BICC Isolan, Novell NE2100, Digital DEPCA, and PCnet-ISA.

        ne(4)    Novel NE2000 and compatible Ethernet interfaces.

        sm(4)    SMC91C9x-based Ethernet interfaces.

        we(4)    Western Digital/SMC 80x3, SMC Elite Ultra, and SMC EtherEZ
                 Ethernet interfaces.

   Sound cards

        aria(4)  Sierra's Aria based sound cards.

        ess(4)   ESS Technology AudioDrive 1788-, 1888-, 1887-, and 888-based
                 sound cards.

        gus(4)   Gravis Ultrasound sound cards.

        pas(4)   ProAudio Spectrum sound cards.

        pss(4)   Personal Sound System-compatible sound cards, including Car-
                 dinal Digital SoundPro 16 and Orchid Soundwave 32.

        sb(4)    Soundblaster, Soundblaster 16, and Soundblaster Pro sound
                 cards.

        wss(4)   Windows Sound System-compatible sound cards based on the
                 AD1848 and compatible chips.

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

SEE ALSO
     cardbus(4), intro(4), isapnp(4), pci(4), pcmcia(4), usb(4)

HISTORY
     The machine-independent ISA subsystem appeared in OpenBSD 2.0.


OpenBSD 3.0                      April 4, 2000                               3
