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

NAME
     pcmcia - introduction to PCMCIA (PC Card) support

SYNOPSIS
     # i386
     pcic0   at isa? port 0x3e0 iomem 0xd0000 iosiz 0x10000
     pcic1   at isa? port 0x3e2 iomem 0xe0000 iosiz 0x4000
     pcic2   at isa? port 0x3e4 iomem 0xe0000 iosiz 0x4000
     pcic*   at isapnp?
     pcic*   at pci? dev? function ?
     pcmcia* at pcic? controller ? socket ?

     # i386
     tcic0   at isa? port 0x240 iomem 0xd0000 iosiz 0x10000
     pcmcia* at tcic? controller ? socket ?

     # sparc
     tslot*  at sbus? slot ? offset ?
     pcmcia* at tslot? socket ?

     # sparc/sparc64
     stp*    at sbus? slot ? offset ?
     pcmcia* at stp? socket ?

     # all architectures
     cbb*      at pci? dev? function ?
     cardslot* at cbb? flags 0x0000
     pcmcia*   at cardslot?

DESCRIPTION
     The pcmcia subsystem provides machine-independent bus support and drivers
     for PCMCIA (PC Card) devices.

SUPPORTED DEVICES
     The following devices are supported, sorted by function and driver name:

   Miscellaneous
        gpr(4)        GemPlus GPR400 smartcard reader.

   Serial interfaces and modems
        com(4), pccom(4)
                      8250/16450/16550-compatible PCMCIA serial cards and
                      modems.

   Network interfaces
        an(4)         Aironet Communications 4500/4800 IEEE 802.11DS wireless
                      controller.
        awi(4)        BayStack 650 wireless 802.11FH wireless controller.
        cnw(4)        Xircom Creditcard Netwave cards.
        ep(4)         3Com 3c556, 3c562, 3c574, and 3c589 EtherLink III Ether-
                      net cards.
        ne(4)         NE2000 compatible cards.
        ray(4)        Raytheon Raylink / WebGear Aviator IEEE 802.11FH 2Mbps
                      wireless controller.
        rln(4)        Proxim RangeLAN2 PC-Card.
        sm(4)         Megahertz Ethernet cards.
        wi(4)         WaveLAN/IEEE, PRISM-II and Spectrum24 IEEE 802.11DS
                      cards.
        xe(4)         Xircom 16bit Ethernet cards.

   SCSI controllers
        aic(4)        Adaptec APA-14[56]0 and NewMedia BusToaster SCSI con-
                      troller cards.

   IDE controllers
        wdc(4)        Devices which implement an ATA/IDE interface, such as
                      mini disk drives, CDROMs.  This includes Compact Flash
                      cards which emulate a disk drive.

     The supported PCMCIA controllers are those that are i82365 compatible.

NOTES
     On some pcmcia adapters, for instance the sbus(4)-based stp(4), the
     pcmcia bus will be mapped in big-endian format instead of the natural
     (and preferred) little endian format.  Unfortunately such controllers
     lack the hardware facility to swap bytes, and it is not efficient to con-
     vert all drivers to always know about this.  While 8 bit drivers can in-
     visibly work on such a bus, 16 bit drivers will need modification to han-
     dle this.  So far, wi(4) is the only driver to require these modifica-
     tions.

     If the pcmcia adapter is not detected, or if pcmcia events (such as card
     insertion) do not occur, there may be a PCI card BIOS mapped in the same
     memory space the pcmcia driver is configured to use (this is often the
     case with ethernet card boot ROMs).  The output from dmesg(8) should con-
     tain a line beginning with ``bios0'' that lists the memory address and
     size of mapped regions.  If there is a conflict, you can use
     boot_config(8) to change the iomem parameter of the pcic device to a non-
     overlapping address, such as 0xd8000 for pcic0.  Some experimentation may
     be required to find a working value; in some cases the size parameter of
     the pcic device may need to be decreased to avoid a conflict.

SEE ALSO
     aic(4), an(4), awi(4), cardbus(4), cbb(4), cnw(4), com(4), eisa(4),
     ep(4), gpr(4), intro(4), isa(4), isapnp(4), ne(4), pci(4), pcic(4),
     ray(4), rln(4), sbus(4), sm(4), stp(4), tcic(4), tslot(4), usb(4),
     wdc(4), wi(4), xe(4)

HISTORY
     The pcmcia driver appeared in OpenBSD 2.3.

OpenBSD 3.5                   September 11, 1998                             2
