Operating The Terminal; Keyboard Functions; Communication Modes - Wyse WY-99GT User Manual

Keyboard Functions
Communication Modes
Operating the Terminal
The three U.S. keyboards supported by the terminal are
illustrated in Appendix B, which lists the codes sent by the keys
in each of the terminal's ASCII personalities. Table D-1 in
Appendix D lists the key sequences that control the terminal
locally.
Key functions for the terminal's calculator and other desktop
accessories are described in Chapter 4, "WyseWorks."
Four modes of communication are possible between the terminal
and an attached computer (in ASCII personalities): full duplex,
half duplex, block, and half-duplex block. The terminal handles
data in these communication modes as illustrated here.
HALF DUPLEX
Screen
t
I Keyboard
f--~-----11
..
----~------<
- - - - -
~
Computer
Display Processor
FULL DUPLEX
I
Sc?en
I
~--1---~
Display
;r:c:s~o~
r -----
~
Computer
Keyboard
Legend:
----From Keyboard
+- - - -
~
-
To/From Computer