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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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