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Annotation of lucent/sys/man/3/cyc, revision 1.1.1.1

1.1       root        1: .TH CYC 3
                      2: .SH NAME
                      3: cyc \- Cyclone fiber interface
                      4: .SH SYNOPSIS
                      5: .B bind #C /dev
                      6: .PP
                      7: .B /dev/cyc
                      8: .SH DESCRIPTION
                      9: The
                     10: .I cyc
                     11: device drives the Cyclone CVME961
                     12: .RI ( not
                     13: 960)
                     14: card with an attached
                     15: SQFBR Squall module
                     16: to provide a high-speed point-to-point 9P link between a CPU
                     17: server and a file server.
                     18: Both machines must of course have VME buses.
                     19: For debugging,
                     20: the Cyclone may be loaded with on-board
                     21: software using
                     22: .B xms
                     23: (see
                     24: .IR con (1))
                     25: and the NINDY ROM supplied with the device.
                     26: In production, though, it is easiest to
                     27: replace the ROM with the program in the directory
                     28: .BR /sys/src/fs/cyc .
                     29: In either case, the on-board software expects an identical
                     30: Cyclone to be at the other end of the fiber.
                     31: One of the boards must be in a CPU server, the other in a
                     32: file server; the systems configure their respective
                     33: boards dynamically as appropriate.
                     34: .PP
                     35: The driver serves a single file,
                     36: .BR /dev/cyc .
                     37: When opened, the file initializes the connection to the file
                     38: server.  The resulting file descriptor should be used only
                     39: to send and receive 9P messages.
                     40: Typically
                     41: .IR boot (8)
                     42: will open
                     43: .BR /dev/cyc ,
                     44: prime the connection by sending
                     45: .B nop
                     46: and
                     47: .B session
                     48: messages (see
                     49: .IR attach (5)),
                     50: and then
                     51: .B mount
                     52: (see
                     53: .IR bind (2))
                     54: the file descriptor in the CPU server's name space.
                     55: Thenceforth all activity on
                     56: .B /dev/cyc
                     57: will be mediated by the mount driver
                     58: .IR mnt (3)).
                     59: .SH FILES
                     60: .TF /sys/src/fs/cyc
                     61: .TP
                     62: .B /sys/src/fs/cyc
                     63: Directory of on-board software for the Cyclone.
                     64: .SH SEE ALSO
                     65: .I
                     66: CVME960, CVM961 Single Board Computer User's Manual
                     67: and
                     68: .I
                     69: SQFBR User's Manual,
                     70: Cyclone Microsystems, Inc., New Haven, CT, 1-203-7865536
                     71: .SH SOURCE
                     72: .B /sys/src/9/power/devcyc.c
                     73: .SH BUGS
                     74: The driver is specific to the SGI Power Series, although the device
                     75: should operate on any VME bus.

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