1 .\" $NetBSD: cy.4,v 1.7 2001/09/11 00:08:25 wiz Exp $
3 .\" Copyright (c) 1997 Jason R. Thorpe. All rights reserved.
4 .\" Copyright (c) 1993 Andrew Herbert.
5 .\" All rights reserved.
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8 .\" modification, are permitted provided that the following conditions
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15 .\" 3. The name Andrew Herbert may not be used to endorse or promote products
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35 Cyclades Cyclom-{4, 8, 16, 32}Y asynchronous comms board serial device driver
37 .Cd "cy0 at isa? iomem 0xd4000 irq 12"
38 .Cd "cy* at pci? dev ? function ?"
40 This driver provides an interface to Cyclades Cyclom-4Y, Cyclom-8Y,
41 Cyclom-16Y, and Cyclom-32Y asynchronous multiport serial boards. These
42 boards are based around Cirrus Logic CD1400 communication controllers.
44 The device minor numbers for this driver are encoded as follows:
47 d c c p p p p p - bits in the minor device number
51 ppppp physical serial line (i.e. port) to use:
57 cc card unit number; note this limits the driver to
60 d set to use as a dial-out line
65 driver makes use of the CD1400's automatic CTS flow control. In addition,
66 the CD1400's automatic input flow control can be used. This requires the
67 kernel configuration option
69 and a special cable that exchanges the RTS and DTR lines.
72 .It "cy%d: port %d: can't allocate tty"
73 There is not enough memory to allocate tty data structures.
74 .It "cy%d: can't allocate input buffer"
75 There is not enough memory to allocate the data input buffer.
78 Additional debugging output can be enable with the kernel configuration
81 Diagnostic counters may be enabled with the kernel configuration option
89 driver was written by Timmo Rossi.
91 Support for the Cyclom-32Y has not been tested.