Specifications

TABLE X TERMINAL CONTROL CODES
-------------------------------,----
This table gives the hexidecimal values to be sent to the Quark's Terminal Emulator (or
video driver)
to perform the various functions it supports. The "Megatel
U
codes are the codes
recognized by the terminal emulator used with any of the distributed operating systems. These
codes will be the control codes used in aLL instalLed operating systems when the are first
booted. QTCONFIG (see below) can be used to change the control codes used.
The "Televideo* 920" codes are an alternative set of control codes which can be used
instead of the standard
Megatel codes. These codes are a subset of the terminal control codes
used by a Televideo 920 terminaL. Only some of the functions performed by that terminaL are
supported
by the Quark operating system, so codes other than those given below will be ignored.
When ruming programs which have been designed to run on this terminal, it may be more
convenient to load the Televideo 920 code set rather than to modify the program to use the
Megatel codes.
The utility program QTCONFIG.COM can be used to load either sets of codes after the system
is booted. This
utility also allows a set of user-defined codes to be created. This set can
be saved as a disk fiLe which can be subsequently loaded through QTCONFIG.COM.
* uTelevideo" is a registered trademark of Televideo Systems, Inc.
TABLE X
TERMINAL CONTROL CODES
"MEGATEL" CODE
uTELEVIDEO
920" CODE
---
FUNCTION LEAD-IN
CONTROL LEAD-IN
CONTROL
(HEX) (HEX)
(HEX)
(HEX)
Bell
none 07 none
07
Cursor Down
(l ine feed)
none
OA
none
OA
Cursor Up (vertical tab)
none
CI3 none DB
Cursor Left (backspace)
none
08
none 08
Cursor Right none OC none
OC
Carriage Retum none
00 none
00
Clear Screen
nfa nfa
18
2B
(same as Clear Screen & Home)
Clear Screen and Home none
1A
nfa nfa
Cursor Home
none 1E
none 1E
Reverse Video Off 1B
19 1B 6B
Reverse Video On
1B
1F
1B
6A
Half-intensity Off
nfa n/a
1B
28
(same as Reverse Off)
Half-intensity On
nfa
nfa
1B 29
(same as Reverse On)
Megatel Computer Technologies Toronto, Canada
Appendix
Page A-16