1 .\" Written by Denis I. Timofeev, 2002.
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31 .Nd Granch SBNI12 leased line modem driver
37 driver provides support for leased line modems of following models:
45 SBNI12-05, SBNI12D-05, ISA and PCI
47 SBNI12-10, SBNI12D-10, ISA and PCI
50 and a kit for data link over a voice band:
53 SBNI12-11, SBNI12D-11, ISA and PCI.
56 In addition to the standard port and IRQ specifications, the
58 driver also supports a number of
60 which can set baud rate, receive level, and low three bytes of Ethernet
61 MAC-address (high three are always
63 because Granch modems are
64 presented to the system as Ethernet-like network cards.
68 is a bit field, it is used to specify SBNI adapter receive level/baud rate:
69 .Bl -tag -width "Bits 0-3:" -offset indent
71 receive level (0x00..0x0f)
77 0 baud rate (2Mb in fast mode/500kb in slow)
79 1 baud rate (1Mb/250kb)
81 2 baud rate (500kb/125kb)
83 3 baud rate (250kb/62.5kb)
86 use fixed receive level
88 if bit 6 is set then receive level will be set according
89 to bits 0-3 value, otherwise receive level will be
94 if bit 7 is set then baud rate will be set according to
95 bits 4-5 value, otherwise baud rate is set to 2Mb
98 The sources for the driver reside in:
101 .It Pa /sys/dev/sbni/if_sbni.c
102 .It Pa /sys/dev/sbni/if_sbnireg.h
103 .It Pa /sys/dev/sbni/if_sbnivar.h
112 device driver first appeared in
121 .An Denis I. Timofeev ,
123 .An David Greenman Ns 's
126 Earlier versions (available on
129 .An Alexey V. Zverev .
131 SBNI12 hardware was designed by
132 .An Alexey V. Chirkov .