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sbni (4)
  • >> sbni (4) ( FreeBSD man: Специальные файлы /dev/* )

  • BSD mandoc
     

    NAME

    
    
    sbni
    
     - Granch SBNI12 leased line modem driver
    
     
    

    SYNOPSIS

    device sbni  

    DESCRIPTION

    The driver provides support for leased line modems of following models:

    and a kit for data link over a voice band:

    In addition to the standard port and IRQ specifications, the driver also supports a number of flags which can set baud rate, receive level, and low three bytes of Ethernet MAC-address (high three are always 00:ff:01 ) because Granch modems are presented to the system as Ethernet-like network cards.

    The high byte of the flags is a bit field, it is used to specify SBNI adapter receive level/baud rate:

    "Bits 0-3:"
    receive level (0x00..0x0f)
    "Bits 4-5:"
    baud rate number:

    "00 -"
    0 baud rate (2Mb in fast mode/500kb in slow)
    "01 -"
    1 baud rate (1Mb/250kb)
    "10 -"
    2 baud rate (500kb/125kb)
    "11 -"
    3 baud rate (250kb/62.5kb)

    "Bit 6:"
    use fixed receive level

    if bit 6 is set then receive level will be set according to bits 0-3 value, otherwise receive level will be autodetected

    "Bit 7:"
    use fixed baud rate

    if bit 7 is set then baud rate will be set according to bits 4-5 value, otherwise baud rate is set to 2Mb

     

    FILES

    The sources for the driver reside in:

    /sys/dev/sbni/if_sbni.c
    /sys/dev/sbni/if_sbnireg.h
    /sys/dev/sbni/if_sbnivar.h

     

    SEE ALSO

    arp(4), netintro(4), ifconfig(8)  

    HISTORY

    The device driver first appeared in Fx 4.6 .  

    AUTHORS

    An -nosplit The device driver for Fx 4.x was written by An Denis I. Timofeev , partially based on An David Greenman Ns 's ed(4) driver. Earlier versions (available on ftp.granch.com were written by An Alexey V. Zverev .

    SBNI12 hardware was designed by An Alexey V. Chirkov .


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    FILES
    SEE ALSO
    HISTORY
    AUTHORS


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