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Plan 9 - man page for cyc (plan9 section 3)

CYC(3)				     Library Functions Manual				   CYC(3)

NAME
       cyc - Cyclone fiber interface

SYNOPSIS
       bind #C /dev

       /dev/cyc

DESCRIPTION
       The  cyc  device  drives  the Cyclone CVME961 (not 960) card with an attached SQFBR Squall
       module to provide a high-speed point-to-point 9P link between a	CPU  server  and  a  file
       server.	 Both  machines must of course have VME buses.	For debugging, the Cyclone may be
       loaded with on-board software using xms (see con(1)) and the NINDY ROM supplied	with  the
       device.	 In  production, though, it is easiest to replace the ROM with the program in the
       directory /sys/src/fs/cyc.  In either case, the on-board  software  expects  an	identical
       Cyclone	to  be at the other end of the fiber.  One of the boards must be in a CPU server,
       the other in a file server; the systems configure their respective boards  dynamically  as
       appropriate.

       The  driver serves a single file, /dev/cyc.  When opened, the file initializes the connec-
       tion to the file server.  The resulting file descriptor should be used only  to	send  and
       receive	9P messages.  Typically boot(8) will open /dev/cyc, prime the connection by send-
       ing nop and session messages (see attach(5)),  and  then  mount	(see  bind(2))	the  file
       descriptor  in  the CPU server's name space.  Thenceforth all activity on /dev/cyc will be
       mediated by the mount driver mnt(3)).

FILES
       /sys/src/fs/cyc
	      Directory of on-board software for the Cyclone.

SEE ALSO
       CVME960, CVM961 Single Board Computer User's  Manual  and  SQFBR  User's  Manual,  Cyclone
       Microsystems, Inc., New Haven, CT, 1-203-7865536

SOURCE
       /sys/src/9/power/devcyc.c

BUGS
       The  driver is specific to the SGI Power Series, although the device should operate on any
       VME bus.

											   CYC(3)


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