EBUS(4)              OpenBSD Programmer's Manual (SPARC64)             EBUS(4)

NAME
     ebus - introduction to SPARC EBus bus support

SYNOPSIS
     ebus* at pci?
     ebus* at mainbus0

DESCRIPTION
     The ebus bus is designed to provide the ability to put ISA and tradition-
     al Intel-style peripherals in a SPARC based system with a minimal amount
     of glue logic.  Typically, it is implemented in the PCIO IC from SME,
     which also implements an hme(4) compatible PCI network device
     (`network').  The ebus has four DMA channels, similar to the DMA seen in
     the esp(4) SCSI DMA.

     OpenBSD provides support for the following devices:

        audioce(4)    SPARC64 EBus CS4231 audio device
        auxio(4)      SPARC64 auxiliary I/O
        bbc(4)        SPARC64 BootBus Controller
        beeper(4)     console annunciator
        clock(4)      Real-time clock
        com(4)        serial communications interface
        comkbd(4)     serial keyboard driver
        comms(4)      serial mouse driver
        led(4)        SPARC64 LED driver
        lom(4)        lights out management
        lpt(4)        parallel port driver
        pcfiic(4)     Phillips PCF8584 I2C controller
        pckbc(4)      PC (ISA) keyboard controller driver
        pmc(4)        power management controller
        power(4)      power button
        sab(4)        Infineon SAB82532 (ESCC2) serial communications driver
        uperf(4)      performance counters driver
        wbsd(4)       Winbond W83L518D/W83L519D SD memory card interface

SEE ALSO
     intro(4)

     Sun Microelectronics, Peripheral Component Interconnect Input Output
     Controller, Part No.: 802-7837-01, March 1997,
     http://www.sun.com/processors/manuals/802-7837.pdf.

OpenBSD 4.7                     October 4, 2009                              1
