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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:
SBNI12-02, SBNI12D-02
SBNI12-04, SBNI12D-04
SBNI12-05, SBNI12D-05, ISA and PCI
SBNI12-10, SBNI12D-10, ISA and PCI
and a kit for data link over a voice band:
SBNI12-11, SBNI12D-11, ISA and PCI.
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
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 .
