2 .\" Copyright (c) 1996 John Hay. All rights reserved.
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38 .Nd synchronous RISCom/N2 / WANic 400/405 device driver
43 .Pa /boot/device.hints :
44 .Cd hint.sr.0.at="isa"
45 .Cd hint.sr.0.port="0x300"
46 .Cd hint.sr.0.irq="10"
47 .Cd hint.sr.0.maddr="0xd0000"
48 .Cd hint.sr.0.flags="0x0"
54 driver supports the RISCom/N2 ISA cards, N2pci and the WANic 400/405 PCI
55 cards that are based on the HD64570 chip.
57 If you have ISA cards, you need to specify the resources for them in
58 .Pa /boot/device.hints .
59 If you have the second ISA card, add
61 .Dl hint.sr.1.at="isa"
62 .Dl hint.sr.1.port="0x310"
63 .Dl hint.sr.1.irq="11"
64 .Dl hint.sr.1.maddr="0xd0000"
65 .Dl hint.sr.1.flags="0x0"
69 sppp code is used for the link level layer.
71 default protocol used is PPP.
72 The Cisco HDLC protocol can be used by
78 Alternately, the driver can be compiled to support
85 .Pa /boot/device.hints
87 If it is not specified, the driver will
90 .Bl -hang -offset indent
91 .It "The card has 2 ports."
92 .It "The clock for the serial ports is external and the transmitter uses"
93 the same clock as the receiver.
98 are a bit field and can be used to force a different
99 behaviour than the default.
101 .Bl -hang -offset indent
103 The card has only one port.
105 Use separate external clocks for transmit and receive on port 0.
107 Use separate external clocks for transmit and receive on port 1.
110 The card only supports IRQ 3, 4, 5, 7, 10, 11, 12 and 15.
112 The iomem area is a 16Kb block and must start at a 16Kb boundary.
116 driver supports the following hardware:
120 SDL Communications RISCom/N2 ISA
122 SDL Communications N2pci
124 SDL Communications WANic 400/405 PCI
127 If the kernel is compiled with
128 .Dv "options NETGRAPH"
129 then the sppp and Cisco HDLC modes are disabled (and the sppp driver
130 is unneeded), and this driver functions as a
132 node with a single hook named
134 Connecting to this hook enables the transmission of raw HDLC frames.
135 The node will have the same name as the device with ``sync_''
140 .It "sr%d: Warning illegal interrupt %d."
141 The card cannot use the specified interrupt.
142 Choose a different one.
154 device driver was written by
155 .An John Hay Aq jhay@FreeBSD.org .
157 Netgraph support was added by
158 .An Julian Elischer Aq julian@FreeBSD.org .
160 At the moment only the X.21 interface is tested.
162 may need tweaks to the clock selection code.
164 The code can probably stand some optimizing.