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1992-01-13
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nt: The AU Terminal Emulator
== ========================
+----------------------------------------------------------------------+
| |
| Version 10.3, Mon 13 Jan 92 |
| |
| This version requires the new *.tdf files included in the .zip file |
| to work properly. |
| |
| It also has a new config.tel file, containing current IP addresses |
| for Computer Centre hosts, and a set of values for the IP parameters |
| which are better suited to the AU network than the NCSA defaults. |
| |
| It also regards all gateways as being directly reachable, even if |
| they are on different subnets. For the Auckland University network |
| users should specify a Class C netmask (255.255.255.0) and host |
| cc_cisco (130.216.1.132) as a gateway; this will allow nt to reach |
| hosts in subnet 1 (e.g. ccu1) directly rather than via the cisco. |
| The cisco also provides gateways for every directly connected subnet |
| using host id 254; e.g. for subnet 3 the gateway address wuld be |
| 130.216.3.254. Specifying such a gateway for each frequently-used |
| will reduce network traffic. All gateways can be reached via our |
| default router, cc_cisco (130.216.1.132). |
+----------------------------------------------------------------------+
nt is the Auckland University Computer Centre's terminal emulator.
It is supplied as an .exe file which has been compressed with lzexe -
this means that although nt.exe is around 100K in size, it requires
around 250K of memory to run, about two-thirds of which is taken
up by the TCP/IP support routines.
Character-mode terminal emulation is completely table-driven, with
tables stored in Terminal Definition Files, *.tdf. .tdf files have
so far been produced for the following terminals:
DEC vt200 (one each for the PC, AT and 'Enhanced' keyboards)
Visual 200
ADDS 520
The vt200 emulation provides complete character-mode emulation,
i.e. everything which can be done without getting into graphics screen
modes, which is everything except Double-height, Double-width characters,
and user-composed characters. From the VMS point of view, this corresponds
to SET TERM /DEVICE=VT102.
Tektronix 4014 emulation is built-in, and is complete and accurate,
including graphics input mode using the cursor keys to drive a graphics
cursor around the screen.
Up to 10 sessions can be running concurrently, each using a different
terminal type.
The sessions can be connected via serial lines (COM ports), Telnet
or LAT.
Telnet support is provided using routines from NCSA Telnet 2.3.
This requires that you set up a proper CONFIG.TEL file, as you would
if you were using NCSA Telnet itself. Note, however, that only
two device drivers are supported by nt - 'packet' and 'decnet'.
The 'packet' device is any one of the Clarkson packet drivers. These
are available as pub/packet-drivers/drivers.zip from sun.soe.clarkson.edu;
we keep a copy as dept/ftp/msdos/drivers.zip on ccu1.aukuni.ac.nz.
The packet drivers allow you to run nt at the same time as other software
which use them, e.g. the ipxpds Novell driver from BYU.
The 'decnet' device is DEC's DLL driver, which is supplied by DEC as
part of DECNET-DOS. Using the 'decnet' driver allows you to run nt
simultaneously with DEC's PCSA.
For users who don't need the TCP/IP capability, a cut-down version of
nt which has only serial (COM) port and LAT support is also provided. This
is included in the release .zip file as nts.exe.
Nevil Brownlee
Thu 7 Mar 91