/share/man/man4/man4.i386/sbni.4
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- .\" Written by Denis I. Timofeev, 2002.
- .\"
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- .\" $FreeBSD$
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- .Dd January 8, 2002
- .Dt SBNI 4 i386
- .Os
- .Sh NAME
- .Nm sbni
- .Nd Granch SBNI12 leased line modem driver
- .Sh SYNOPSIS
- .Cd "device sbni"
- .Sh DESCRIPTION
- The
- .Nm
- driver provides support for leased line modems of following models:
- .Pp
- .Bl -bullet -compact
- .It
- SBNI12-02, SBNI12D-02
- .It
- SBNI12-04, SBNI12D-04
- .It
- SBNI12-05, SBNI12D-05, ISA and PCI
- .It
- SBNI12-10, SBNI12D-10, ISA and PCI
- .El
- .Pp
- and a kit for data link over a voice band:
- .Bl -bullet
- .It
- SBNI12-11, SBNI12D-11, ISA and PCI.
- .El
- .Pp
- In addition to the standard port and IRQ specifications, the
- .Nm
- driver also supports a number of
- .Va flags
- which can set baud rate, receive level, and low three bytes of Ethernet
- MAC-address (high three are always
- .Li 00:ff:01 ) ,
- because Granch modems are
- presented to the system as Ethernet-like network cards.
- .Pp
- The high byte of the
- .Va flags
- is a bit field, it is used to specify SBNI adapter receive level/baud rate:
- .Bl -tag -width "Bits 0-3:" -offset indent
- .It "Bits 0-3:"
- receive level (0x00..0x0f)
- .It "Bits 4-5:"
- baud rate number:
- .Pp
- .Bl -inset -compact
- .It "00 -"
- 0 baud rate (2Mb in fast mode/500kb in slow)
- .It "01 -"
- 1 baud rate (1Mb/250kb)
- .It "10 -"
- 2 baud rate (500kb/125kb)
- .It "11 -"
- 3 baud rate (250kb/62.5kb)
- .El
- .It "Bit 6:"
- use fixed receive level
- .Pp
- if bit 6 is set then receive level will be set according
- to bits 0-3 value, otherwise receive level will be
- autodetected
- .It "Bit 7:"
- use fixed baud rate
- .Pp
- if bit 7 is set then baud rate will be set according to
- bits 4-5 value, otherwise baud rate is set to 2Mb
- .El
- .Sh FILES
- The sources for the driver reside in:
- .Pp
- .Bl -tag -width ".Pa /sys/dev/sbni/if_sbni.c" -compact
- .It Pa /sys/dev/sbni/if_sbni.c
- .It Pa /sys/dev/sbni/if_sbnireg.h
- .It Pa /sys/dev/sbni/if_sbnivar.h
- .El
- .Sh SEE ALSO
- .Xr arp 4 ,
- .Xr netintro 4 ,
- .Xr ifconfig 8
- .Sh HISTORY
- The
- .Nm
- device driver first appeared in
- .Fx 4.6 .
- .Sh AUTHORS
- .An -nosplit
- The
- .Nm
- device driver for
- .Fx
- 4.x was written by
- .An Denis I. Timofeev ,
- partially based on
- .An David Greenman Ns 's
- .Xr ed 4
- driver.
- Earlier versions (available on
- .Pa ftp.granch.com )
- were written by
- .An Alexey V. Zverev .
- .Pp
- SBNI12 hardware was designed by
- .An Alexey V. Chirkov .