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1.1     ! root        1: .\" Copyright (c) 1986 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: .\"    @(#)4.t 6.8 (Berkeley) 4/14/86
        !             6: .\"
        !             7: .SH
        !             8: .LG
        !             9: .ce
        !            10: Section 4
        !            11: .SM
        !            12: .sp
        !            13: .PP
        !            14: The system now supports the 64Kbit and 256Kbit RAM memory
        !            15: controllers for the VAX-11/780 and VAX-11/785, the second UNIBUS
        !            16: adapter for the VAX-11/750, and the new VAX 8600 with UNIBUS and/or
        !            17: MASSBUS peripherals.
        !            18: The Unibus management routines for network interfaces
        !            19: have been generalized in 4.3BSD;
        !            20: this change requires stylized changes within most of the network drivers.
        !            21: A number of changes were made to each terminal multiplexor driver as well.
        !            22: See sections 9 and 11 of the ``Changes to the Kernel in 4.3BSD'' document
        !            23: for details.
        !            24: .PP
        !            25: New manual entries in Section 4 have been created to describe
        !            26: the new communications protocols and network architectures that are supported.
        !            27: The most recent addition in 4.3BSD is the Xerox Network System protocols.
        !            28: .BP arp
        !            29: \fIIoctl\fPs have been added to enter and delete entries in
        !            30: the Internet-to-Ethernet\(dg address translation tables.
        !            31: .FS
        !            32: \(dg Ethernet is a trademark of Xerox Corporation.
        !            33: .FE
        !            34: Entries may be made permanent,
        !            35: and may be ``published'' to allow a host to act as an ARP server.
        !            36: .BP ddn
        !            37: A new DDN Standard Mode X.25 IMP interface driver.
        !            38: .BP de
        !            39: A new DEC DEUNA 10 Mb/s Ethernet interface driver.
        !            40: .BP dhu
        !            41: A new DEC DHU-11 communications multiplexor driver.
        !            42: .BP dmc
        !            43: The configuration flags may be used to specify how to set up the device.
        !            44: Multiple outstanding DMA requests can now be handled.
        !            45: A new encapsulation is used that allows multiple protocols to be supported,
        !            46: but is incompatible with that used by 4.2BSD and earlier Ultrix releases.
        !            47: .BP dmz
        !            48: A new DEC DMZ-32 communications multiplexor driver.
        !            49: .BP ec
        !            50: Has a corrected backoff algorithm.        
        !            51: Multiple units are supported by placing the Unibus memory address
        !            52: in the device \fIflags\fP field.
        !            53: .BP ex
        !            54: A new Excelan 204 10 Mb/s Ethernet interface driver.
        !            55: .BP hdh
        !            56: A new ACC IF-11/HDH IMP interface driver.
        !            57: .BP idp
        !            58: A description of the new Xerox Internet Datagram Protocol.
        !            59: .BP il
        !            60: The driver has additional diagnostics and
        !            61: now supports Xerox NS.
        !            62: .BP ip
        !            63: Support for IP options was added.
        !            64: .BP ix
        !            65: A new Interlan NP100 10 Mb/s Ethernet interface driver.
        !            66: .BP np
        !            67: A new device for downloading microcode into the
        !            68: Interlan NP100 10 Mb/s Ethernet interface driver.
        !            69: .BP ns
        !            70: A description of the new Xerox Network Systems protocol family.
        !            71: .BP nsip
        !            72: A description of the new software network interface
        !            73: encapsulating NS packets in IP packets.
        !            74: .BP ps
        !            75: The driver for the Picture System 2 has a small change in interrupt handling.
        !            76: .BP pty
        !            77: A new mode was added to allow a small set of commands to be passed
        !            78: to the pty master from the slave as a rudimentary type of \fIioctl\fP,
        !            79: analogous to that of PKT mode.
        !            80: Using this mode or PKT mode, a \fIselect\fP for exceptional conditions
        !            81: on the master side of a pty returns \fBtrue\fP when a command operation is
        !            82: available to be read.
        !            83: \fISelect\fP for writing on the master side has been fixed.
        !            84: .BP spp
        !            85: A description of the new Xerox Sequenced Packet Protocol.
        !            86: .BP tcp
        !            87: An option was added to disable small-packet avoidance
        !            88: under certain circumstances.
        !            89: .BP tty
        !            90: PASS8 mode has been added to pass all 8 bits of input.
        !            91: New \fIioctl\fPs were added to support the getting and setting of window
        !            92: size information for the terminal.  A signal was
        !            93: added to notify processes when the window size changes.

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