TerminalEmulatorDoc.tioga
Last edited by Spreitzer, March 20, 1985 11:54:02 am PST
TerminalEmulator
CEDAR 5.2 — FOR INTERNAL XEROX USE ONLY
TerminalEmulator
Spreitzer
© Copyright 1985 Xerox Corporation. All rights reserved.
TerminalEmulator emulates a standard array-of-characters style terminal.
Keywords: terminal, emulate, simulate, TTY, glass, character, screen
XEROX Xerox Corporation
Palo Alto Research Center
3333 Coyote Hill Road
Palo Alto, California 94304
For Internal Xerox Use Only
1. User Interface
TerminalEmulator is like Chat, in that it provides Pup telnet connections. It differs from Chat in that the kind of terminal it emulates is more sophisticated. Chat can only append characters to a linear typescript. TerminalEmulator models a terminal with an array of characters, which is randomly addressable. TerminalEmulator implements the TerminalEmulator command:
TerminalEmulator:
syntax
TerminalEmulator switch* [hostName]
description
Make a terminal emulator, and maybe login to a host. If no hostName is given, no connection is initially attempted.
switches
-term terminalTypeName
Names the type of terminal you wish to emulate.
-host hostName
Names the host to connect to.
-connect
Don't try to login, just connect.
examples
% TerminalEmulator vaxc
This makes a terminal emulator of the default type, and tries to connect it to VAXC and then login.
warnings
If the host you connect to is not properly prepared for a PUP telnet standard login, it might echo your password.
TerminalEmulator:
syntax
TerminalEmulator -term ?
description
List the available terminal types.
examples
% TerminalEmulator ?
Available Terminal Types: adm3, adm3a, debug, dm2500, dmdd, vt52.
2. Installation
BringOver the public part of TerminalEmulator.DF into ///Commands/. Then, from any directory, issue the TerminalEmulator command.
3. Bugs and Misfeatures
You can shift-select from a TerminalEmulator viewer. You should not try to `stuff' characters into it.
The control keys have the usual ASCII meanings. The looks key sets the eighth bit of the character.
You should not try any Tioga editing operations on the TerminalEmulator viewer. Since the control and looks keys have been trapped, there are few available. But if you think of one, don't try it.
To attract the attention of a TerminalEmulator viewer, simply select anywhere in it. User selection operations do not affect where the logical cursor of the terminal is. The caret you see tries to track the logical cursor, but fails sometimes. When a TerminalEmulator viewer is first created, it looks like you have its attention, but you don't; click in it before trying to do something.
Tioga will scroll the viewer psuedo-randomly.