Control Data Corporation CDC721 - XO Quick user guide

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CDC@721 - XO
DISPLAY TERMINAL
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HARDWARE REFERENCE MANUAL
62940020

REVISION
A
(05-03-82)
B
(08-10-82)
C
(11-20-82)
D
I (01-24-83)
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1 1
REVISION RECORD
DESCRIPTION
Manual released. This edition obsoletes all previous
editions.
Manual revised to incorporate ECO/FCO 15337. Also
includes various technical and editorial changes.
Manual revised to incorporate ECO 15371 and
technical/editorial changes.
Manual revised to incorporate editorial changes.
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1 1
1 62940020 1
REVISION LETTERS I,D, Q AND X ARE NOT USED
©1981, 1982, 1983
by Control Data Corporation
Printed in the United States of America
ii
Address comments concerning
this manual to:
Control Data Corporation
Publications and Graphics Div,
2401 North Fairview Avenue
St. Paul, Minnesota 55113
or use Comment Sheet in
the back of this manual.

LIST OF EFFECTIVE PAGES
New features, as well as changes, deletions, and additions to informa-
tion in this manual are indicated by bars in the margins or by a dot
near the page number if the entire page is affected. A bar by the
page number indicates pagination rather than content has changed.
I
PAGE
I REV
PAGE
I REV
PAGE
I REV
I Cover
B-25/B-26
A
ITitle Page
B-27/B-28
B
Iii thru iv
D
B-29 thru
B-34
A
lv/vi
C
B-35 D
Ivii thru x B
B-36
A
xi
C
B-37 D
1-1
thru
1-3
B C-1
thru
C-3
A
1-4
C
D-1
B
1-5 thru 1-7
A
D-2 thru
D-5
A
2-1/2-2
A D-6
B
2-3/2-4
B
D-7
thru
D-41
A
2-5
A
Comment Sheet
D
2-6
B Mailer
2-7
A
Back Cover
2-8/2-9
B
2-10/2-11
A
2-12/2-13
B
12-14 thru
2-17
A
2-18/2-19
B
3-1/3-2
B
3-3
A
3-4
B
3-5 thru 3-8
C
3-9
B
3-10/3-11
A
4-1 thru 4-7
B
4-8
A
4-9 thru
4-46
B
4-47
C
4-48 thru 4-93
B
A-I thru A-6
B
A-7
A
A-8
B
B-1/B-2
A
B-3 thru B-5
B
B-6 thru B-9
A
B-10/B-11
B
B-12
A
B-13
B
B-14
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B-15
B
B-16
A
B-17
B
B-18
thru B-21
A
B-22 thru B-24
B
62940020 D
iii/iv

PREFACE
This manual contains hardware reference information for the CDC®
721 Display Terminal. This information consists of functional
descriptions, parameter and mode selections, as well as a
description of operator controls, indicators, and keysets.
This information provides an overview of the terminal and
specifically covers its operation in CYBER mode. That mode is
for operations with computer systems of the CDC CYBER 120 or 170
series. In addition, an appendix covers a 40lX/graphics mode
that can be run when the terminal is connected to the Control
Data Shared Network.
Other associated manuals include the:
Title
Publication Number
721 Display Terminal Unpacking/Packing
Instructions
721 Display Terminal Operator's Guide
Installation Instructions
All manuals may be ordered from:
62940020 C
Control Data Corporation
Literature and Distribution Services
308 North Dale Street
St. Paul, Minnesota 55103
62940038
62940019
v/vi

CONTENTS
1. GENERAL DESCRIPTION
Terminal Features .• . • • •
Basic Terminal Features • • • • •
Optional Terminal Features
Terminal Configuration • . • • • • • • •
Equipment Specifications . . •
Physical Specifications . •
Electrical Specifications .
Environmental Specifications • . • .
2. FUNCTIONAL DESCRIPTION
· 1-2
• 1-2
· • . . 1-3
• 1-3
· 1-6
• 1-6
· 1-6
· . • 1-7
CRT Monitor • • • . . •. .•....... 2-1
Microprocessor • •••.••.••• . . • . 2-1
Memory . • . • . • . • . . • . . . . .. .•. . 2-3
Display Refresh Logic • • . . • • • 2-3
Symbol Generators .• .•.... . . . . 2-4
ROM-Based Generator • •• .•. • 2-4
Loadable Symbol Generator . . . . . . • . 2-4
Character Attributes . •. ..• •••••• 2-6
Display Timing . . •• •.....•.•.. 2-6
Symbol Generation . . • .• ••. ••• • 2-6
Cursor • • . . • . . . . . . . .
2-6
Host Interface •. ..••
• • • • • • • 2-1 7
Keyboard Interface ..••
• • • • • • • 2-1 7
Optional Features • • . . • . . . . • • • •
2-17
Touchpanel Option . . . •. ...
• • 2-17
Graphics Display Option • . . • • . • . • • •
2-18
Parallel Channel Option •. ...
Memory Module (ROM Pack) Option ••.
· • • • 2-18
• • • • 2-18
Dual Asynchronous Interface Option . . • • •
2-18
Foreign Keycap Options • • • • • .. •••
• 2-19
3. OPERATOR CONTROLS AND INDICATORS
Cabinet-Mounted Controls and Indicators
Keyboard Configurations . •• ..•
Keyboard Operation . •• ••••••
4. OPERATION
Parameter Selection • • • • • •
Terminal Installation Parameters ••
62940020 B
Fl Return • • • • • • • • • • • •
F2 CONFIG (Configuration) ••••
F3 CONFIG (Configuration) ••
F4 CONFIG (Configuration) •••
F5 CONFIG (Configuration) ••••
• • • 3-1
. . 3-4
• 3-8
· . . . . . 4-1
•• • • 4-3
· . . . . . 4-5
• •• • 4-5
. . . . . . . . 4-5
• • • 4-6
• • • • • • 4-6
vii

F6 AS, X or Y
F7 L, ID
F8 (PORT A)
F9 (PORT B)
FlO [Instl Mode n (Installation Mode n)]
Mode Installation Parameters
Fl Return
F2 CONFIG (Configuration)
F3 CONFIG (Configuration)
F4 CONFIG (Configuration)
F5 CONFIG (Configuration)
F6 OPR DF (Operator Default)
Mode Operator Parameters
Printer
Baud Rate
Default Parameters
Load Source Selection
Interfaces
Aborts and Recovery
Performance
Errors
Installation Parameters
Load File Selection
Interfaces
Aborts and Recovery
Performance
ASCII Network Loader
Description
Autoload Message Formats
Load Block
Load Request
NAK Sequence
Load Complete
Autoload Sequence
Interfaces
Aborts and Recovery
Errors
Performance
Installation Parameters
ROM Pack Loader
Description
Aborts and Recovery
Performance
Installation Parameters
Interfaces
Errors
CY~ER Mode Operation
viii
General Information
Cursor
Character Attributes
Parity Errors
Keyboard Operation
f,\ ( Shi ft) Keys
@ (Lock) Key/Indicator
CTRL (Control) Key
RESET Switch
4-6
4-7
4-7
4-9
4-9
4-10
4-10
4-10
4-11
4-12
4-13
4-14
4-17
4-20
4-20
4-20
4-22
4-22
4-23
4-23
4-24
4-24
4-24
4-24
4-26
4-26
4-26
4-26
4-27
4-28
4-29
4-29
4-30
4-30
4-31
4-32
4-32
4-33
4-33
4-33
4-33
4-34
4-34
4-35
4-35
4-35
4-35
4-36
4-36
4-36
4-37
4-37
4-38
4-38
4-38
4-39
62940020 B

Validation Bits • • • • • • • • • • • • • • • • • 4-39
Host Multiple Code Sequences • • • • • • • • • • • 4-40
Prologue Code • • • • • •••• ••• 4-40
Printer Operation • • • • • • • • • •• ••• 4-41
Character-Transmit Mode • • • • • • • 4-50
PRINT Key • • • • • . • • • • • • • • • • 4-51
SETUP Key • •• •••• ••••••••• 4-52
Special Function Keys ••• • 4-52
L/INSRT/C Key • • • • • • • • • • • • • • 4-53
ERASE Key • • • • • • • • • • • • . • • • 4- 53
L/DLETE/C Key • • • • • • • • . • • • •• 4-54
P/CLEAR/EOL (Erase Page/Erase End of Line) Key •• 4-54
LF/ESC (Line Feed/Escape) Key • • • • •• 4-55
M REL/BREAK Key • • • • • • • • •• ••••• 4-55
NEXT/ (New Line/Carriage Return) •.••• 4-55
(Tab Forward) Key • • • • • • • • • 4-55
(Tab Backward) Key • • • •• ••..•• 4-56
Cursor Control Keys (Up ), (Down ), (Left ),
(Right ) and (HOME Key) ••• ••.• 4- 56
CR/DEL (Carriage Return/Delete) Key • • • .• 4-57
Special Action Keys (+, -, x, ,HELP, ERASE, EDIT
BACK, LAB, DATA, STOP) • • • • • • • 4-57
Block-Transmit Mode • • • • • • • •• •••••• 4-57
Initiating/Terminating Block Mode ••• .•• 4-58
Block Mode Operation • • . • • •• ••..•. 4-59
Keyboard Operation in Block Mode • • • • • • • • • 4-59
Special-Action and Function Keys • • • 4-60
L/INSRT and L/DLETE/C Keys • • 4-60
Protect Operation • . • • . • • • • • • • • • 4-60
Host Communications •••••• • 4-61
Protect System Disabled • . • • • • • • . . • • • 4-61
Protect System Enabled (Keyboard Operation) • 4-61
Alphanumeric and Control Code Entry • ••• 4-62
, (Forward Tab and Back Tab) Keys • 4-62
NEXT/ (New Line) Key ••••••••.••• 4-62
PRINT Key • • • • • • • • • • • • • • • 4- 62
Protect System Active Display Operation • • • 4-63
Touchpanel Operation • • . • • • • • • • 4-63
Line Display • • • • • • • . • • • • • • • . • • • 4-64
Host Communications • • • • • • • • • • •. • 4- 64
Terminal Operation • • • • • • • • • • .••• 4-64
CYBER Mode Host Received Commands • • • • 4-65
Host-Specified Code Sequence/Controlware ••• 4-84
Model Report Request • •• ••• • 4-88
Host Select Bidirectional Port • • . . • • 4-91
X-Off/X-On • • • • • • • • • • • • • • • • • • 4-92
Write New Mode Parameters • • • • • • • • • • 4-92
62940020 B
ix

APPENDIXES
A. RESIDENT DIAGNOSTICS
A-I
B. INTERFACES TO SOFTWARE
B-1
C. RESIDENT HOST INTERFACE C-l
D. 40lX/GRAPHICS MODE
D-l
FIGURES
1. GENERAL DESCRIPTION
1-1
1-2
1-3
72l-XO Display Terminal • • • • • •
Basic Terminal Configuration • • •
Expanded Terminal Configuration
• 1-1
• 1-4
• 1-5
2. FUNCTIONAL DESCRIPTION
2-1 Microprocessor CPU Block Diagram • • • • • • • • • 2-2
2-2 Display Refresh Logic - Alphanumeric Mode •••• 2-3
2-3 Symbol Generator Addressing • • • • • • •• • 2-5
3. OPERATOR CONTROLS AND INDICATORS
3-1
3-2
3-3
3-4
3-5
3-6
3-7
3-8
3-9
Location
Keyboard
Keyboard
Keyboard
Keyboard
Keyboard
Keyboard
Keyboard
Keyboard
• • • • • 3- 2
· . . . . 3-4
• 3-5
· . . . . 3-6
• • • • • 3-6
of Controls and Indicators
with Standard English Keycaps •
with British Keycap Option
with Spanish Keycap Option
with German Keycap Option •
with French Keycap Option ••
with Swedish/Finnish Option
with Danish/Norwegian Option
Keystation Assignments ••••
• •• • 3-7
· . . . . 3-7
• • • • 3-8
• • • • • 3-9
4. OPERATION
x
4-1
4-2
4-3
4-4
4-5
4-6
Parameters • • • • • . • • • • •• •••••• 4-2
Mode Selection Menu • • • • • • • • • • • • • • • 4-2
Terminal Installation Parameters •• ••••• 4-4
Mode Installation Parameters • • • • • • • • • • • 4-11
CYBER Mode Operator Parameters • • • • • • • • • • 4-21
Load Source/File Selection • • •• •••••• 4-25
62940020 B

TABLES
2. FUNCTIONAL DESCRIPTION
2-1
2-2
2-3
2-4
2-5
2-6
2-7
2-8
2-9
2-10
American Alphanumeric Character Codes . •• • 2-7
British Alphanumeric Character Codes • 2-8
Spanish Alphanumeric Character Codes • • • 2-9
German Alphanumeric Character Codes • • • • • 2-10
French Alphanumeric Character Codes •• . • • • • 2-11
Swedish/Finnish Alphanumeric Character Codes . • • 2-12
Danish/Norwegian Alphanumeric Character Codes •• 2-13
Control Character Codes ••• • • • • • • • • . • 2-14
Line Drawing Symbol Codes • • • • • • • • 2-15
Foreign Character Codes ••• . •• ••••• 2-16
3. OPERATOR CONTROLS AND INDICATORS
3-1 Keyboard Keystation Coding (Hexadecimal) ••••• 3-9
4. OPERATION
4-1 Keycodes and Legends of Standard Keyboard • • 4-42
4-1.1 Keycode and Legend Addendum for British Keycap
4-1.2
4-1.3
4-1.4
4-1.5
4-1.6
4-2
4-3
62940020 C
Ki t .. . . . . . . . . . . . . . . . . .. 4-46
Keycode and Legend Addendum for Spanish Keycap
Ki t .. . . . . . . . . . . . . . . . . . . . . 4-47
Keycode and Legend Addendum for German Keycap
Ki t . . . . . . . . . . . . . . . . . . . . . . 4-47
Keycode and Legend Addendum for French Keycap
Ki t .. . . . . . . . . . . . . . . .
Keycode and Legend Addendum for Swedish/
Finnish Keycap Kit • • • • • • • • • • •
Keycode and Legend Addendum for Danish/
4-48
•• 4-49
Norwegian Keycap Kit • • • • • • •• ••• • 4-50
CYBER Mode Receive and I/O Responses • • • 4-65
Read Parameter Data Word Format •.•••••••• 4-84
xi

GENERAL DESCRIPTION
The COC® 72l-XO Display Terminal (figure 1-1) is a locally or
remotely located input/output device capable of supporting
several modes of operation. This capability is accomplished
through use of a microprocessor and common bus based scheme that
supports a large, loadable memory (loadable via the communica-
tions line, an attached flexible disk, or operator plug-in memory
module). The basic resident terminal mode supports CYBER mode
(722-10 TTY compatible advanced mode with enhancements and addi-
tional edit features) and a Control Data Shared Network (CDSN)
downline load capability. Optional modes require optional
hardware and include, Tektronix* 40lX mode, graphics mode, and
IST-III mode (operating controlware loaded from the host network
or from a program module).
Figure 1-1. 721-XO Display Terminal
*Tektronix is a registered trademark of Tektronix Inc.
62940020 B
1-1
1

TERMINAL FEATURES
The following tabulations highlight the basic and optional
features of the terminal.
BASIC TERMINAL FEATURES
The basic terminal features include the following:
• Tiltable display module with a 380 mm (15 in diagonal
measurement) cathode-ray tube (CRT) and associated drive
electronics
• Symbol generation circuits - 256 symbols in ROM, 64
loadable RAM symbols
• 20K ROM and 64K RAM, 256 x 4K nonvolatile memory (NVM),
and lK character generation RAM
• Nonvolatile memory (NVM) for parameter retention
• Detached alphanumeric keyboard
• Asynchronous RS-232-C/CCITT V.24 interface with selectable
transmission speeds up to 19 200 bps (receive and transmit
speeds may differ)
• ASCII downline load (CDSN compatible) capability
• 80- or l32-characters per line with up to 30 lines of data
entry
• Window scroll, character attributes (inverse, dim, blink,
blank, underscore, and protected data)
• Memory module capability (16K maximum)
• Parameter selection performed via keyboard (no selection
switches)
• Switch selectable 115/220 V ac operation
• Foreign character ROM
1-2 62940020 B

OPTIONAL TERMINAL FEATURES
Optional terminal features include:
e Full-vector graphic displays within either a 512- by
480-dot array or a 512- by 512-dot array
• 16- by 16-position touchpanel
• 16K memory mod ul e
• Peripheral options to support:
An alphanumeric character printer (dual asynchronous
RS-232-C interface required)
An asynchronous RS-232-C peripheral device interface
with two ports with transmission speeds up to 19 200 bps
Parallel peripheral interface
TERMINAL CONFIGURATION
The terminal may be configured as a basic terminal as shown in
figure 1-2 or as an expanded terminal as shown in figure 1-3.
The basic terminal configuration supports CYBER mode operation
and CDSN-campatible downline load, while the expanded config-
uration supports optional modes that allow emulation of several
terminal products.
The minimum configuration is a single PC board with 64K bytes of
RAM and 20K bytes of ROM. The maximum configuration is limited
by PC board space and power requirements. The terminal can be
configured with a basic terminal control PC board, two large
62940020 B
1-3

optional PC board modules, and three small optional PC board
modules. The large modules (approximately 515 square centi-
meters) connect to the basic terminal control PC board via ribbon
cables. The large option modules are factory and field service
center installable. The small modules (approximately 160 square
centimeters) plug directly into a backpanel that connects into
the basic terminal. The small option modules are customer
installable.
r-- - -------------------,
B
ASIC TERMINAL CONTROL MEMORY
-MODULE
(ROM PACK)
laOB
ALPHA-NUMERIC
~
MICRO CRT LOGIC
PROCESSOR I _
TO GRAPHIC
-
OPTION
RAM KEYBOARD STANDARD
64K
INTERFACE --
MULTI-USER
-
BYTES
(UART)
KEYBOARD
NON VOLATILE
RAM -
BATTERY
256 X4
-
(PARAMETERS)
INTERNAL
HOST
ROM
...
DATA SET I/F
-..
32 K COMMUNICATIONS
RS-232 -C
BYTES (MAX)
LOGIC HOST
---------
__________ J
PROCESSOR BUS
..
TO EXPANSION MODULES
O~336-4
*SHOWN FOR REFERENCE, NOT INCLUDED IN BASIC TERMINAL CONFIGURATION.
Figure 1-2. Basic Terminal Configuration
1-4 62940020 C

BASIC
TERMINAL
STANDARD
MULTI-USER
KEYBOARD
t
BASIC
TERMINAL
CONTROL
CONFIGURATION
~
MEMORY
MODULE
(ROM PACK)
OPTIONAL
OPTIONAL
LOGIC BOARDS
r------~
I DOT I
I ..
GRAPHICS I
I ,
WITH
I TOUCH
PANEL
I
I I
I
PARALLEL
I
I
I/O
I
I -I
INTERFACE
I I
I I
I I
I
..
DUAL ASYNC I
I , RS232 I
I I
L ______ ...J
STANDARD
..
RS232 I/F
,
DATA SET
MONITOR
I
TYPICAL I/O
CONNECTIONS
PERIPHERALS
SERIAL CHARACTER
PRINTER W/ASYNC PORTS
HOST COMPUTER/MODEM
Figure 1-3. Expanded Terminal Configuration
04337-2
62940020 1-5

EQUIPMENT SPECIFICATIONS
The following paragraphs describe the physical, electrical, and
environmental specifications for the display terminal.
PHYSICAL SPECIFICATIONS
The size and weight of the monitor and control module and
detached keyboard module are as follows:
0
Monitor
and control
logic module
Height:
440
mm
(17.3 in) nominal
position
Width:
430
mm
(16.9
in)
maximum
Depth:
430
mm
(17.0
in)
maximum
Weight:
19.5 kg (43 lb)
maximum
Weight (packaged) : 22.2
kg (49 lb)
maximum
o Keyboard module
Height:
51
mm
(2.0
in)
maximum
80
rnm
(3.1
in) maximum (raised
position)
Width: 490
mm
(19.3
in)
maximum
Depth: 230
mm
(9.0
in)
maximum
Weight: 3.0 kg (8
Ib)
Weight (packaged): 4.5 kg (10 lb) maximum
ELECTRICAL SPECIFICATIONS
The display terminal has the following electrical power
requirements:
Basic Configuration
Full Configuration
0 l20V
ac,
50/60
Hz,
at
1.0
A,
nominal:
1.30
A,
maximum
0 220V
ac,
50/60
Hz,
at
0.5
A,
nominal:
0.71
A,
maximum
0 240V
ac,
50/60
Hz,
at
0.5
A,
nominal:
0.65 A,
maximum
0
85 W
(290 Btu/hr) , heat dissipation
configuration without options
1-6 62940020 A

ENVIRONMENTAL SPECIFICATIONS
The display terminal has the following environmental requirements:
• OPERATING:
Temperature range:
Temperature change:
Relative humidity range:
Humidity change:
Altitude:
• NONOPERATING:
10°C(50°F) to 40°C(l04°F)
lO°C(18°F)/60 minutes
20 to 80 percent
10 percent/60 minutes
3000m (9850 ft) maximum
Temperature range: -40°C(-40°F) to 60°C(140°F)
Temperature change: 20°C(36°F)/60 minutes
Relative humidity range: 5 to 100 percent
Humidity change: 10 percent/60 minutes
62940020 1-7