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NetBSD 6.1.5 - man page for cy (netbsd section 4)

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CY(4)				   BSD Kernel Interfaces Manual 			    CY(4)

     cy -- Cyclades Cyclom-{4, 8, 16, 32}Y asynchronous comms board serial device driver

     cy0 at isa? iomem 0xd4000 irq 12
     cy* at pci? dev ? function ?

     This driver provides an interface to Cyclades Cyclom-4Y, Cyclom-8Y, Cyclom-16Y, and
     Cyclom-32Y asynchronous multiport serial boards.  These boards are based around Cirrus Logic
     CD1400 communication controllers.

     The device minor numbers for this driver are encoded as follows:

	 d c c p p p p p     - bits in the minor device number

	 bits	 meaning
	 ----	 -------
	 ppppp	 physical serial line (i.e. port) to use:
		     0-3 on Cyclom-4Y
		     0-7 on Cyclom-8Y
		     0-15 on Cyclom-16Y
		     0-31 on Cyclom-32Y

	 cc	 card unit number; note this limits the driver to
		 four cards per system

	 d	 set to use as a dial-out line

     The cy driver makes use of the CD1400's automatic CTS flow control.  In addition, the
     CD1400's automatic input flow control can be used.  This requires the kernel configuration
     option CY_HW_RTS and a special cable that exchanges the RTS and DTR lines.

     cy%d: port %d: can't allocate tty	There is not enough memory to allocate tty data struc-

     cy%d: can't allocate input buffer	There is not enough memory to allocate the data input

     Additional debugging output can be enable with the kernel configuration option CY_DEBUG.
     Diagnostic counters may be enabled with the kernel configuration option CY_DEBUG1.

     termios(4), tty(4)

     The cy driver was written by Timmo Rossi.

     Support for the Cyclom-32Y has not been tested.

BSD					November 10, 1997				      BSD
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