Return to enp.4 CVS log

Up to [CSRG BSD Unix] / 43BSDReno / share / man / man4 / man4.tahoe

Annotation of 43BSDReno/share/man/man4/man4.tahoe/enp.4, revision 1.1.1.1

1.1       root        1: .\" Copyright (c) 1986 The Regents of the University of California.
                      2: .\" All rights reserved.
                      3: .\"
                      4: .\" Redistribution and use in source and binary forms are permitted provided
                      5: .\" that: (1) source distributions retain this entire copyright notice and
                      6: .\" comment, and (2) distributions including binaries display the following
                      7: .\" acknowledgement:  ``This product includes software developed by the
                      8: .\" University of California, Berkeley and its contributors'' in the
                      9: .\" documentation or other materials provided with the distribution and in
                     10: .\" all advertising materials mentioning features or use of this software.
                     11: .\" Neither the name of the University nor the names of its contributors may
                     12: .\" be used to endorse or promote products derived from this software without
                     13: .\" specific prior written permission.
                     14: .\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
                     15: .\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
                     16: .\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     17: .\"
                     18: .\"    @(#)enp.4       5.3 (Berkeley) 6/23/90
                     19: .\"
                     20: .TH ENP 4 "June 23, 1990"
                     21: .UC 5
                     22: .SH NAME
                     23: enp \- CMC 10 Mb/s Ethernet interface
                     24: .SH SYNOPSIS
                     25: .B "device enp0 at vba? csr 0xfff40000 vector enpintr"
                     26: .SH DESCRIPTION
                     27: The
                     28: .I enp
                     29: interface provides access to a 10 Mb/s Ethernet network through
                     30: a CMC ENP-20 controller.
                     31: .PP
                     32: The hardware has 128 kilobytes of dual-ported memory on the VERSAbus. 
                     33: This memory
                     34: is used for internal buffering by the board, and the interface code reads
                     35: the buffer contents directly through the VERSAbus.
                     36: The address of this memory is derived from the address specified
                     37: in the configuration file.
                     38: .PP
                     39: Each of the host's network addresses
                     40: is specified at boot time with an SIOCSIFADDR
                     41: ioctl.  The
                     42: .I ace
                     43: interface employs the address resolution protocol described in
                     44: .IR arp (4)
                     45: to dynamically map between Internet and Ethernet addresses on the local
                     46: network.
                     47: .PP
                     48: The interface normally tries to use a ``trailer'' encapsulation
                     49: to minimize copying data on input and output.
                     50: The use of trailers is negotiated with ARP.
                     51: This negotiation may be disabled, on a per-interface basis,
                     52: by setting the IFF_NOTRAILERS
                     53: flag with an SIOCSIFFLAGS ioctl.
                     54: .PP
                     55: Associated with each interface is a character device which
                     56: is used to dowload, start, and reset the firmware in the controller.
                     57: Reading or writing the ``ram device'' reads or writes the writable
                     58: control store in the controller.  Two
                     59: .IR ioctl (2)
                     60: calls, ENPIOGO and ENPIORESET, are used to start and reset the
                     61: firmware.
                     62: .SH DIAGNOSTICS
                     63: .BR "enp%d: can't handle af%d" .
                     64: The interface was handed
                     65: a message with addresses formatted in an unsuitable address
                     66: family; the packet was dropped.
                     67: .SH SEE ALSO
                     68: intro(4), inet(4), arp(4), enpload(8)
                     69: .SH BUGS
                     70: The hardware is not capable of talking to itself.  The software
                     71: implements local sending and broadcast by sending such packets to the
                     72: loop interface.  This is a kludge.
                     73: .PP
                     74: The link level firmware does not support setting the board's
                     75: Ethernet address.

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.