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Annotation of 43BSDTahoe/man/man4/vax/pcl.4, revision 1.1.1.1

1.1       root        1: .\" Copyright (c) 1983 Regents of the University of California.
                      2: .\" All rights reserved.  The Berkeley software License Agreement
                      3: .\" specifies the terms and conditions for redistribution.
                      4: .\"
                      5: .\"    @(#)pcl.4       6.2 (Berkeley) 5/21/86
                      6: .\"
                      7: .TH PCL 4 "May 21, 1986"
                      8: .UC 5
                      9: .SH NAME
                     10: pcl \- DEC CSS PCL-11 B Network Interface
                     11: .SH SYNOPSIS
                     12: .B "device pcl0 at uba? csr 164200 vector pclxint pclrint"
                     13: .SH DESCRIPTION
                     14: The 
                     15: .I pcl
                     16: device provides an IP-only interface to the DEC CSS PCL-11
                     17: time division multiplexed network bus.
                     18: The controller itself is not accessible to users.
                     19: .PP
                     20: The hosts's address is specified with the SIOCSIFADDR ioctl.
                     21: The interface will not transmit or receive any data before
                     22: its address is defined.
                     23: .PP
                     24: As the PCL-11 hardware is only capable of having 15 interfaces per network,
                     25: a single-byte host-on-network number is used, with range [1..15] to match
                     26: the TDM bus addresses of the interfaces.
                     27: .PP
                     28: The interface currently only supports the Internet protocol family
                     29: and only provides ``natural'' (header) encapsulation.
                     30: .SH DIAGNOSTICS
                     31: .BR "pcl%d: can't init" .
                     32: Insufficient UNIBUS resources existed to initialize the device.
                     33: This is likely to occur when the device is run on a buffered
                     34: data path on an 11/750 and other network interfaces are also
                     35: configured to use buffered data paths, or when it is configured
                     36: to use buffered data paths on an 11/730 (which has none).
                     37: .PP
                     38: .BR "pcl%d: can't handle af%d" .
                     39: The interface was handed a message with addresses formatted in an
                     40: unsuitable address family;  the packet was dropped.
                     41: .PP
                     42: .BR "pcl%d: stray xmit interrupt" .
                     43: An interrupt occurred when no output had previously been started.
                     44: .PP
                     45: .BR "pcl%d: master" .
                     46: The TDM bus had no station providing ``bus master'' timing signals,
                     47: so this interface has assumed the ``master'' role.  This message should
                     48: only appear at most once per UNIBUS INIT on a single system.
                     49: Unless there is a hardware failure, only one station may be master at at time.
                     50: .PP
                     51: .BR "pcl%d: send error, tcr=%b, tsr=%b" .
                     52: The device indicated a problem sending data on output.
                     53: If a ``receiver offline'' error is detected, it is not normally logged
                     54: unless the option PCL_TESTING has been selected, as this causes a lot
                     55: of console chatter when sending to a down machine.  However, this option
                     56: is quite useful when debugging problems with the PCL interfaces.
                     57: .PP
                     58: .BR "pcl%d: rcv error, rcr=%b rsr=%b" .
                     59: The device indicated a problem receiving data on input.
                     60: .PP
                     61: .BR "pcl%d: bad len=%d" .
                     62: An input operation resulted in a data transfer of less than
                     63: 0 or more than 1008 bytes of
                     64: data into memory (according to the word count register).
                     65: This should never happen as the maximum size of a PCL message
                     66: has been agreed upon to be 1008 bytes (same as ArpaNet message).
                     67: .SH "SEE ALSO"
                     68: intro(4N), inet(4F)

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