TeleVideo 955 User manual

TeleVideo~
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Operator's Manual
Televideo S~:rstems, Inc. ---._"

TELEVIDEO®
955 VIDEO DISPLAY TERMINAL
OPERATOR I S MANUAL
TeleVideo Document 131969-00-B
11 September 1985
Copyright
Copyright (c) 1985 by TeleVideo Systems, Inc. All rights
reserved. No part of this publication may be reproduced,
transmitted, transcribed, stored in a retrieval system, or
translated into any language or computer language, in any form
or by any means, electronic, mechanical, magnetic, optical,
chemical, manual, or otherwise, without the prior written
permission of TeleVideo Systems, Inc., 1170 Morse Avenue
P.O. Box 3568 Sunnyvale, CA 94088-3568 800/521-4897
Disclaimer
TeleVideo Systems, Inc. makes no representations or warranties
with respect to this manual. Further, TeleVideo Systems, Inc.
reserves the right to make changes in the specifications of
the product described within this manual at any time without
notice and without obligation of TeleVideo Systems, Inc. to
notify any person of such revision or changes.
FCC Class A Warning
This peripheral equipment generates, uses, and can radiate
radio frequency energy. If not installed and used in
accordance with the instruction manual, it may cause
interference with radio emissions. This peripheral equipment
has been tested and found to comply with the limits for a
Class A computing device, pursuant to Subpart J of Part 15 of
FCC Rules, which are designed to provide reasonable protection
against radio frequency interference when operated in a
commercial environment. Operation of this equipment in a
residential area is likely to cause interference, in which
case the user at his own risk and expense wi 11 be required to
correct the interference. The use of nonshielded I/O cables
may not guarantee compliance with FCC RFI limits.
TeleVideo is a registered trademark of TeleVideo Systems, Inc.
Televideo Systems, Inc., 1170 Morse Avenue P.O. Box 3568
Sunnyvale, CA 94088-3568 800/521-4897

TABLE OF CONTENTS
INTRODUCTION
MEET THE 955 TERMINAL
Built-in Features
Options
USING THIS MANUAL
1. INSTALLATION
INSPECTING
THE TERMINAL
SELECT+NG A GOOD LOCATION
INSTALLiNG THE TERMINAL
Connecting the Keyboard
Connecting the Terminal to the Computer System
Connecting the Terminal to a Printer
PLUGGING IN AND TURNING ON THE TERMINAL
INSTALLATION SUMMARY
2. SETTING OPERATING VALUES
HOW SET UP WORKS
Set Up Summary
Set Up Categories
THE SET UP MENUS
Main Menu
Other Set Up Menus
3. OPERATING THE TERMINAL
THE KEYBOARD
Character Keys
Editing Keys
Special Keys
Function Keys
OPERATING THE TERMINAL FROM THE KEYBOARD
Resetting the Terminal
Editing and Communication Modes
Editing and Sending Data
SCREEN APPEARANCE
The Cursor
Screen Saver
The Status Line
iii
xi
xi
xi
xi
xii
1
1
1
2
3
4
5
6
6
7
7
7
8
9
9
10
25
25
25
26
30
32
32
32
33
34
35
35
35
36

4. MAINTENANCE AND ASSISTANCE
TROUBLESHOOTING
Troubleshooting Table
Running the Self Test
Checking the Line Fuse
IF YOU NEED ASSISTANCE
Technical Support
Customer Service
Service Under Warranty
Shipping the Terminal
5. PROGRAMMING THE 955
ENTERING COMMANDS
Command Descriptions
Using Commands in Your Programs
Entering Commands From the Keyboard
VERIFYING OPERATIONS
Self Test
Monitor Mode
CHANGING OPERATING VALUES
Terminal Operating Modes
Variable Operating Values
Saving Operating Values
Programming Compatibility Mode
Changing the Screen Refresh Rate
Resetting the Terminal
RUNNING A PROGRAM
6. CONTROLLING THE TERMINAL'S OPERATION
KEYBOARD AND BELL
Keyboard Repeat Mode
Locking/Unlocking the Keyboard
Locking Four Terminal Keys
Editing Key Mode
Keyclick
Sounding the Bell
Selecting the Bell Column
Margin Bell Mode
SCREEN APPEARANCE
Screen Saver
Screen Visibility
Screen Background
Visual Attributes
Attribute Space Mode
Normal Intensity Mode
Attribute Base Mode
Selecting the Status Line Attribute
Cursor Style
Columns per Line Mode
iv
Contents
39
39
39
41
42
43
44
44
44
44
45
45
46
46
47
47
47
48
49
49
50
50
51
52
52
54
55
55
55
55
56
56
56
56
57
57
57
57
58
58
58
60
60
60
61
61
61

CHARACTER SETS AND BLOCK GRAPHICS
Selecting a Character Set
Special Graphics Mode
Multinational Character Set
Data Word Mode
Block Graphics
Optional Graphics Firmware
7. EDITING
EDITING
MODES
Autowrap Mode
New Line Mode
DOWN Key Mode
Write Protect and Protect Modes
ADDITIONAL SCREEN MEMORY
Selecting the Number of Lines per Page
Autopage Mode
Moving to Another Page
SCROLLING
Controlling the Rate of Scrolling
Defining a Scrolling Region
Line Lock
CURSOR CONTROL
Line Feed and Reverse Line Feed
Directional Cursor Movement
Addressing the Cursor
Reading the Cursor
Addressing the Cursor in Decimal Units
Cursor Home
Reading the Cursor in Decimal Units
TAB STOPS
Setting a Column of Tab Stops
Moving the Cursor to a Tab Stop
Clearing Typewriter Tab Stop(s)
Clearing Field Tab Stop(s)
EDITING DATA
Line and Page Edit
Insert and Replace Mode
The Replacement Character
Inserting Data
Deleting Data
Erasing Data
Clearing Data
v
Contents
62
62
62
63
64
64
65
67
67
67
67
68
68
71
72
73
74
75
75
76
76
78
78
80
83
84
85
85
85
.86
86
87
88
88
89
89
89
90
90
91
93
94

Contents
8. COMMUNICATIONS 97
CHANGING PORT OPERATING VALUES 97
SETTING UP COMMUNICATIONS WITH THE COMPUTER 98
Selecting a Handshaking Protocol 98
Receive Buffer Fill Limit 99
Transmission Control Mode 99
Selecting the Transmit Delay Rate 100
Communication Modes 100
Setting the Communication Mode 102
SENDING SCREEN DATA 102
Delimiters 102
Reprogramming Delimiters 103
Data Markers 103
Sending Text 104
LOADING AND SENDING MESSAGES 107
Sending the Terminal's Identification 108
The Answerback Message 108
Displaying the Bottom Information Line's Contents 108
Selecting Both Information Lines' Contents 109
Loading the User Messages 109
Sending the Information Line Contents 111
THE FUNCT KEY 111
PRINTING 112
Print Commands 112
Page Print Flip Mode 116
Printer Handshaking Protocols 116
Page Print Terminator 118
9. REPROGRAMMABLE KEYS 119
FUNCTION KEYS 119
Selecting the Function Key Set 121
Reprogramming Function Keys 121
Saving the Contents of the Function Keys 124
Invoking a Function Key 124
REPROGRAMMING EDITING KEYS 125
The SEND Key 125
One Editing Key 125
All Editing Keys 128
vi

APPENDICES
A
SPECIFICATIONS
B STATEMENT OF LIMITED WARRANTY
C ASCII CODE TABLES
D MONITOR MODE CONTROL CHARACTERS
E
CURSOR COORDINATES
F FOREIGN CHARACTER SETS
G MULTINATIONAL CHARACTER SET
H CONTROL CODES AND ESCAPE SEQUENCES
I CALCULATOR MODE
GLOSSARY
INDEX
QUICK REFERENCE GUIDE
vii
Contents
A-I
A-4
A-S
A-7
A-8
A-9
A-14
A-16
A-23
G-l
X-I
Q-l

Contents
LIST OF FIGURES
1-1
1-2
1-3
1-4
1-5
2-1
2-2
2-3
2-4
2-5
2-6
3-1
3-2
3-3
3-4
3-5
3-6
4-1
4-2
4-3
5-1
6-1
6-2
7-1
7-2
7-3
7-4
7-5
7-6
7-7
7-8
7-9
7-10
8-1
8-2
F-l
F-2
F-3
F-4
F-5
F-6
F-7
F-8
Comfortable Terminal Lighting
Ideal Terminal Placement
955 Terminal, Front View
955 Terminal, Rear View
Pin Numbers (25-Pin RS-232 Connector)
Main Menu
Main Port Menus
Print Communications Menu
Screen Menus
Keyboard Menus
Programming Menus
Character Keys
Editing Keys
Special Keys
Data Sent by the Unshifted SEND Key
Data Sent by the Shifted SEND Key
955 Status Line
Location of the Line Fuse
Good Fuse
Burned-Out Fuse
Typical Monitor Mode Display
Special Graphics and Multinational Characters
Display with Three Blocks of Graphics
Effect of Line Feed and Carriage Return Commands
Sample Protected Form with Spaces Left for Data Entry
Partial Page of Memory Displayed on the Screen
Dividing Memory into Pages
Cursor Movement in Autopage Mode
Cursor Movement Between Adjacent Pages
Scrolling Movement Within a Scrolling Region
Setting Field Tab Stops
Deleting Data
Erasing Data
Data Flow in Communication Modes
Print Modes
U.S. ASCII Keyboard Layout
U.K. Keyboard Layout
French Keyboard Layout
German Keyboard Layout
Spanish Keyboard Layout
Finnish Keyboard Layout
Norwegian Keyboard Layout
Italian Keyboard Layout
viii
2
2
3
3
4
9
10
14
16
19
22
26
26
31
34
34
36
43
43
43
48
63
65
68
70
72
73
74
74
77
87
92
93
101
113
A-9
A-I0
A-I0
A-II
A-II
A-12
A-12
A-13

Contents
LIST OF TABLES
1-1 RS-232C Computer (DTE) Interface Connector Assignments 5
1-2 RS-232C Printer (DCE) Interface Connector Assignments 5
2-1 Set Up Categories 8
2-2 Main Set Up Menu 9
2-3 Main Port Set Up Menus 11
2-4 Printer Port Set Up Menu 14
2-5 Screen Set Up Menus 17
2-6 Keyboard Set Up Menus 20
2-7 Programming Set Up Menus 22
3-1 Editing Keys 27
3-2 Special Keys 31
3-4 PRINT Key Operation 35
3-5 Status Line Values 36
4-1 Troubleshooting Terminal Problems 39
5-1 Command Elements 46
5-2 Effects of Compatibility Mode 51
5-3 Summary of Reset Methods 53
6-1 Effects of Visual Attributes 59
7-1 Effects of Protect Mode 69
7-2 Data Loss Due to Scrolling 75
7-3 Effect of Line Feed Code on Cursor Movement 78
7-4 Effect of Reverse Line Feed Code on Cursor Movement 79
7-5 Effect of Cursor Movement Commands 81
7-6 Effect of Protect Mode on Tabulation Commands 87
7-7 Effect of Protect Mode on Insert Commands 91
7-8 Effect of Protect Mode on Delete Commands 92
7-9 Clear Commands 95
8-1 Communication Modes 100
8-2 Default Delimiter Values 103
8-3 Send Commands 105
8-4 Print Commands 114
8-5 Printer Port Handshaking Protocols 116
9-1 Set One Default Function Key Codes 120
9-2 Set Two Default Function Key Codes 120
9-3 Default and Ps Values of Unshifted Editing Keys 126
9-4 Default and Ps Values of Shifted Editing Keys 127
C-l ASCII Code Chart A-5
C-2 ASCII Control Character Abbreviations A-6
F-l Character Set Comparison A-9
H-l Control Codes A-16
H-2 Escape Sequences A-17
H-3 ESC [ Commands A-21
H-4 Terminal Operating Modes A-22
H-5 Variable Operating Values A-22
ix

INTRODUCTION
MEET THE 955 TERMINAL
Televideo's 955 terminal is designed with quality,
dependability, and user convenience in mind. It is fully code
compatible with TeleVideo's 925/950 family of terminals, but
also offers such innovative features as a high-resolution
screen with amber color option, 64 function keys, and two
operator information lines.
Built-in Features
TeleVideo's 955 terminal is a "smart" terminal with many
built-in features:
Full 925/950 programming compatibility
Tilt-and-swivel case
High-resolution screen
l4-inch, 80/l32-column display
Easy-to-use set up menus
Switchable space/no-space visual attributes
Top and bottom operator information lines
Two sets of 32 programmable function keys
Reprogrammable editing keys
Special graphics and multinational character sets
Options
The following options are available:
RS-422 communication interface
One or three additional pages of memory
Tektronix 40l0/40l4-compatible graphics
Eight foreign-language character sets
No-cost amber screen
20 rnA current loop
Function key overlays
Blank keycaps
WordStar(tm)-CP/M(r) EPROM and keyboard overlay
Contact your distributor or TeleVideo's spare parts department
to order any options.
xi

Introduction
USING THIS MANUAL
The first chapters of the manual contain general user
information. Chapters I through 3 describe how to install the
terminal, change operating values in the set up menus, and
control the terminal from the keyboard. Chapter 4 lists
troubleshooting procedures and tells you how to obtain
service.
Chapters 5 through 9 are for programmers. They explain how
the terminal operates and all the programming commands.
At the back of the manual is reference material: appendices,
glossary, index, and a programmer's quick reference guide.
xii

l. INSTALLATION
This chapter tells you how to install the terminal. The end
of the chapter summarizes the installation steps.
INSPECTING THE TERMINAL
WARNING! Do not open the terminal case. Opening the case
exposes you to potential shock hazards. If you wish to
inspect the interior of your terminal, have a qualified
technician open the case and discharge the voltage for you.
After you unpack the terminal, keep the shipping carton and
packing material in case you move or ship the terminal again.
In the packing carton you should find (in addition to this
manual) :
The terminal
A keyboard
A coiled keyboard cable
A power cable.
Inspect the keyboard, cabinet, and video screen for shipping
damage. If anything is missinq or damaged, contact your
distributor or dealer.
SELECTING A GOOD LOCATION
Make sure the site you have chosen for the terminal has 4
inches (10.2 cm) of clearance for ventilation on all sides.
The orientation of the terminal's screen can greatly affect
your comfort. Reflections and bright light are the most
common causes of eye strain. Choose a site with indirect
lighting, away from windows and other sources of bright light,
as Figure 1-1 shows.
You can avoid fatigue by selecting furniture whose design is
conducive to good working posture and placing the terminal at
the correct height. The keyboard should be lower than the
terminal screen.
1

Installation
Figure 1-2 shows the ideal relationship between the terminal
and the operator.
Figure 1-1
Coafortable Teraina1 Lighting
WINDOW
WINDOW WINDOW
Figure 1-2
Ideal Teraina1 P1aceaent
INSTALLING THE TERMINAL
NOTEI Tests performed on TeleVideo terminals by Underwriters
Laboratories indicate they emit virtually no radiation and
pose no health hazard.
Now you are ready to pi ug in the keyboard and connect your
terminal to a computer and printer. Figures 1-3 and 1-4 show
front and rear views of the 955 terminal with ports, switches
and connectors marked.
2

Installation
connecting the Keyboard
Plug the ends of the coiled keyboard cable into the front of
the keyboard case and the front of the terminal (Figure 1-3).
Figure 1-3
955 Ter.inal, Front View
Figure 1-4
955 Terminal, Rear View
POWERCABLE~~~~~~=
SOCKET ...... ;;;;;;;;;;;;;;;;;;.~
3

Installation
connecting the Terminal to the Computer System
Before you connect the terminal, make sure its voltage is the
same as your electrical outlet's. Your terminal should carry
a label stating whether its setting is 115 volt or 230 volt
ac power. If you want to change the voltage setting, call the
TeleVideo Customer Service Department for instructions.
Before you connect the terminal to the computer, measure the
distance between them. If the distance is less than 50 feet,
you can use an RS-232C interface (with a 25-pin connector)
between the terminal and the computer.
For distances more than 50 feet, consult your dealer or call
TeleVideo's Peripherals Technical Support Department for help
in selecting the correct interface. See the section on
assistance in Chapter 4 for information about calling
TeleVideo.
If you use the RS-232C interface, follow these steps:
1. Compare the suggested pin connector assignments, listed
in Table 1-1, with those required by your computer.
Figure 1-5 shows the terminal's pin connector numbers.
If necessary, change the interface cable's pin
assignments (or ask your service technician to do it for
you) .
2. Connect the interface cable to the terminal's main port
and the computer's RS-232C port.
NOTEI Not all computers have a one-to-one pin
compatibility with standard RS-232C pin assignments.
Typically, pins 2, 3, and 7 are required to transmit d~ta
between the terminal and the computer. If your computer
fails to operate properly, call the computer manufacturer
for assistance in wiring the interface cable.
Figure 1-5
Pin Numbers (25-Pin RS-232 Connector)
13
\@@@@@@@@@@@ @ (~
l @@@@@@@'~@CiJ~_~~
25
14
4

Installation
Table 1-1
RS-232C Computer (OTE) Interface Connector Assignments
Pin
No. Signal Name*
Direction
1
Frame
Ground
2** Transmit
Data Output
3**
Receive
Data Input
4
Request to Send
Output
5
Clear
to Send Input
6
Data Set Ready Input
7** Signal
Ground
8
Data Carrier Detect
Input
20 Data Terminal Ready Output
*Refer to the EIA's Standard RS-232C for signal definitions.
**The terminal requires these signals.
Connecting the Terminal to a Printer
1. Check your printer's pin connector against the terminal's
printer port pin assignments, shown in Table 1-2.
2. Connect an RS-232C interface cable to the printer port
(Figure 1-4) and to an RS-232C-compatible serial printer.
NOTE! Not all printers have a one-to-one pin
compatibility with standard RS-232C pin assignments. To
transmit data from the terminal to the printer, you need
only pins 3, 7, and 2 and/or 20. If your printer fails
to operate properly, call the printer manufacturer.
Table 1-2
RS-232C Printer (DCE) Interface Connector Assignments
Pin
No.
Signal Name*
Direction
1
Frame Ground
2
Receive Data Input
3
Transmit
Data
Output
6
Data
~et
Ready Output
7 Signal Ground
11**
Printer
Busy
20
Data Terminal Ready Input
*Reference EIA Standard RS-232C for signal definitions.
**Nonstandard handshaking signal used by several printers such
as Epson, Texas Instruments, and Okidata. To use pin 11
instead of pin 20, call your service technician.
5

Installation
PLUGGING IN AND TURNING ON THE TERMINAL
Now you are ready to plug in the terminal and turn it on.
1. Plug the power cable into the termini'll and into a
grounded wall outlet. See Figure 1-4 for the location of
the power cable outlet at the rear of the terminal.
In the United States, use a 3-prong electrical outlet
with a National Electrical Manufacturers Association
(NEMA) Standard 5-15R rating. If you use a two-prong
adapter, ground it with a pigtail.
2. Push the white dot on the ON/OFF switch on the right side
of the grooved panel below the screen (Figure I-i).
3. Listen for the terminal's bell, after about a second,
and look for the cursor in the top left corner of the
screen after 10 to 15 seconds. If the screen remains
dark, go to step 5.
4. Adjust the angle of the terminal by pushing on the case
until you can see the screen easily.
5. Adjust the screen contrast with the roller on the left
side of the grooved panel below the screen (Figure 1-3).
INSTALLATION SUMMARY
1. Unpack and inspect the terminal.
2. Plug the keyboard cable into the termini'll and keyboard.
3. Check that the unit has the correct voltage (115 or 230).
4. Connect the appropriate interface cable between the
computer system and the terminal.
5. Attach a printer interface cable (if you are connecting a
printer to the terminal).
6. Plug the power cord into the terminal and wall outlet.
7. Turn on the terminal, listen for the beep, watch for the
cursor, and adjust the tilt and screen contrast.
Before using the terminal, check its operating values, as
described in the following chapter.
6

2. SETTING OPERATING VALUES
When you turn on the 905, it is ready to operate. Its factory
default operating values are set when it is manufactured.
This chapter tells how to reset the default values.
NOTEI You can change all set up values with programming
comands. See Chapter 5.
HOW SET UP WORKS
To change the 955's operating values, select new values from
the set up menus. Each has an instruction line at the top of
the screen and a selection line at the bottom to guide you.
Set Up Summary
1. Press SET UP (shifted NO SCROLL). The main menu appears.
You can enter set up any time, but if the computer is
sending data, the screen stops receiving incoming data
until you leave set up.
NOTE I If the SET UP key has been disabled by a
programming command (see Chapter 6), you cannot enter set
up. The terminal's bell sounds and the main menu does
not appear.
2. Press the UP and DOWN keys to display different set up
menus.
3. Press the LEFT and RIGHT keys to move from field to field
in each menu.
4. Press the space bar to flip through the values in each
field. When the desired value appears, simply move to
the next field or menu (or leave set up).
NOTE I The main menu has action fields. Pressing the
space bar triggers the action.
7

Setting Operating Values
5 . Wh e n you fin ish s e 1 e c tin g set up val u e s, pre s sSE T UP to
return to normal operation. The message
SAVE? yiN
appears on the screen.
6. Press Y to save your new values in nonvolatile memory.
If you press any other key, the values you selected are
lost when you turn the power off or reset the terminal.
Set Up Categories
Table 2-1 describes the 955's six set up categories.
Table 2-1
Set Up Categories
Category
Main
Main
communi-
cations
(two menus)
Print
communi-
cations
Screen
(two menus)
Keyboard
(two menus)
Programming
(two menus)
Controls
Access to other menus, plus monitor mode and
reset to factory default values.
Communication with the computer. Some values
must match your computer's operating values for
proper communication. If you are unsure of the
values to select, consult your computer's
documentation.
Communication with the printer. Some values
must match your printer's operating values. If
you are unsure of the values to select, consult
your printer's documentation.
Screen display characteristics. Some features
are a matter of personal preference (such as
cursor style), while others should be chosen
to suit your application program.
Character sets, how certain keys operate, and
the codes they transmit.
Loading and sending function key messages;
reprogramming the answerback message.
8