display terminal

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ADM-42 data

display terminal

LEAR SIEGLER,INC.

USERS REFERENCE MANUAL

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LEAR SIEGLER, INC.

DATA PRODUCTS DIVISION

TABLE OF CONTENTS SECTION

1 GENERAL DESCRIPTION •••••••••••••••••••••••••

1.1 INTRODUCT ION •••••••••••••••••••••••••••

1.2 PURPOSE AND USE ••••••••••••••••••••••••

1.3 OPERATIONAL DESCRIPTION ••••••••••••••••

1.3. 1 Regulated Power Supply .. ' ... .

1.3.2 Keyboard . . . .

1.3.3 Control Section (CPU) •••••••••

1.3.4 Video Logic and Control . . . . 1.3.5 External Interfacee ••...•..

1.3.6 System Configuration Switches.

1.4 PHYSICAL DESCRIPTION •••••••••••••••••••

1.5 SPECIFICATIONS •••••••••••••••••••••••••

1.5.1 Transmission Modes . . . . 1. 5 . 2 Character Format . . . . 1.5.3 Word Structure . . . . 1.5.4 Configuration Control . . . .

1.6 ADM- 4 2 OPTIONS •••••••••••••••••••••••••

1.7 RELATED DOCUMENT •••••••••••••••••••••••

2 IN S T A LLA T ION • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 2.1 INTRODUCTION •••.•••••••••.•••••••••••••

2.2 SAFETY REQUIREMENTS ••••••••••••••••••••

2.3 SITE REQUIREMENTS ••••••••••••••••••••••

2.4 UNPACKING AND INITIAL INSPECTION •••••••

2.5 INITIAL PREPARATION ••••••••••••••••••••

2.5.1 Line Voltage Selection . . . . 2.5.2 Configuration Control Switch

PAGE 1-1 1-1 1-1 1-2

1-2

1-4 1-4 1-4 1-4 1-5 1-5

1-6 1-6 1-10 1-10 1-10 1-14 1-17 2-1 2-1

2-1

2-2

Settings... 2-2

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LEAR SIEGLER, INC.

TABLE OF CONTENTS (continued)

SECTION PAGE

3

2.6

2.7

INTERFACE INFORMATION STANDARD PCBA . . . 2.6.1 MODEM Port Interface . . . . e • • • • • •

2.6.2 EXTENSION Port Interface . . . . INTERFACE INFORMATION, OPTION PCBA . . . . 2.7.1 PARALLEL PRINTER Port Inter-

2-3 2-3 2-3 2-3 face. . . . . 2-3 2.7.2

2.7.3

ASYNCHRONOUS PRINTER Port

Interf ace . • . . . c . . . . SYNCHRONOUS Port Interface ..•..

2-3 2-3 2.8 INSTALLING THE ADM-42 . . . 2-10 2.9 TURN-ON AND TURN-OFF PROCEDURES . . . 2-10 OPERATING INSTRUCTIONS •••••••••••••••••••••••

3.1 3.2

3.3 3.4 3.5

INTRODUCTION . . . . KEYBOARD

3.2.1 3.2.2 3.2.3 3.2.4

FUNCTIONS . . . . Terminal Control Keys • . . . Alphanumeric Keys . . . • . . . Special Character Keys . . . . Operational Control Keys . . . . CURSOR CONTROL OPERATIONS . . . . DATA EDITING CONTROL OPERATIONS . . . . 3.4. 1 Editing Examples . . . . DATA TRANSMISSION CONTROL OPERATIONS . . . . 3.5.1

3.5.2 3.5.3 3.5.4 3.5.5 3.5.6 3.5.7

Transmission (Baud) Rates . . . . Block Mode Transmission . . • . . . Example of Block Mode Trans- mission . . . . Conversation Mode Transmission.

Example of Conversation Mode Transmission . . . . Serial Print Mode Transmission.

Parallel Print Mode Trans-

3-1 3-1 3-1 3-3 3-8 3-8 3-8 3-9 3-10 3-13 3-16 3-16 3-16 3-17 3-18 3-19 3-20

m~ss~on. . . . .. . . . . . . . . . 3-22 3.5.8

3.5.9 3.5.10

Buffered Print Mode Trans-

missionc . . . . ADM-l Mode Transmission . . . . Polling Mode Transmission . . . .

3-22 3-22 3-22

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LEAR SIEGLER, INC.

SECTION

3.6 3.7

3.8

3.9

3.10

TABLE OF CONTENTS (continued)

PROGR,AM MODE . . . . • . • • • . . . • . ⁰ . . . .

PAGE 3-22 3-23 3-23 3-24 SPECIAL ADM-42 CHARACTERISTICS •..••••.•.

3.7.1 Protected Fields/Characters ..••

3.7.2 Status Line Characteristics ••..

PROGRAMMING CONSIDERATIONS . . . • . . . • . 3-25 3-25 3-38 3.8.1 CTRL Key Operations . . . .

3.8.2 ESC Key Operations . . . • . • . . . 3.8.3 Function Key (FUNKEY) Opera- 3.8.4

3.8.5 3.8.6 3"SQ7 3.8.8 3.8.9 3.8.10 STANDARD 3.9.1 3.9.2 3.9.3 3.9.4 3.9.5 SPECIAL 3.10.1 3.10.2 3.10.3 3.10.4

tions ... 3-38 Personality Control Operations. 3-42 Terminal/Mode Control

Operations . . . 3-46 Cursor Control Operations . . . . • . 3-47 Format Control Operations •.•..• 3-48 Data Editing Control

Operations . . . • 3-49 Data .Transmission Control

Operations . . . 3-51 Video Attribute Control . . . 3-53 (ADM-2) POLLING . . . • . 3-55 Setting ADM-42 Address . . . 3-55 Standard (ADM-2) Polling

Operations . . . 3-55 Removing Terminal from Standard

Polling Status... 3-57 Initiating Standard Polling

Sequence. . . . . . . . . . . . . . • . . . . .. 3- 58 Standard (ADM-2 Compatible)

Res po n s e s . . . . . . . . . . . . . . . 3 - 5 8 POLLING OPERATIONS . . . 3-70 GROUP POLL Operations . . . 3-70 GROUP SELECT Operations . . . 3-71 MULTI-POINT CONTENTION

Operations . . . 3-71 Addressable Printer Port

Operations . . . 3-71

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LEAR SIEGLER, INC.

TABLE OF CONTENTS (continued) APPENDIX A

Operator's Quick Reference Guide TO Baud Rate Change ...

Operator's Quick Reference Guide To Personality Change.

Operator's Quick Reference Guide To Video Attribute Con tro 1 Sequence. e • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •

Operator's Quick Reference Guide TO CTRL Key Sequence ..

Operator's Quick Reference Guide To Graphic Character Set Code s ... ^e _ • • • • • II • • • • • • " • • • • • • • • • " • III • • • • • • • • • • • • til •

Operator's Quick Reference Guide To Escape Sequence ....

Operator's Quick Reference Guide To Absolute Cursor Positioning Sequence . . . . Operator's Quick Reference Guide To FUNKEY Programming.

Operator's Quick Reference Guide To Buffered Print

Mode . . . • • . . . • . . .

FIGURE 1-1 1-2 1-3 1-4 1-5 1-6 2-1 2-2 2-3 2-4 2-5 2-6 2-7

LIST OF FIGURES

ADM-42 Data Display Terminal . . . • ADM-42 Data Flow Block Diagram . . . • • . ADM-42 Character Format (By Ascending ASCII

Codes) With HEX Code . . . • . . . Word Format Codes With DIP Switch Configuration.

Standard PCBA Component and Interface

Connector Locations . . . • . . . • . . . Option PCBA Component and Interface

Connector Locations . . . . Typical ADM- 42 Interfaces . . . . ADM-42 Standard PCBA Interface Logic . . . . Option PCBA CPU Bus Extension Interface

Connector/Pin List . . . • . . . . • . . . Option PCBA Parallel Printer Port Interface

Log i c . . • . . . . • . . . • . . . • . . Option PCBA Asynchronous Serial Printer Port Interface Logic . . . . Option PCBA Synchronous Port Interface Logic ... . Location of ADM-42 Controls and Interface

PAGE A-I A-2 A-4 A-5 A-6 A-7 A-8 A-9 A-lO

PAGE viii

1-3 1-11 1-12 1-15 1-17 2-4 2-5 2-6 2-7 2-8 2-9 Connectors. . . . . . . . . . . . . . . . . . . . 2 -12 3-1 ADM-42 Data Display Terminal Standard Keyboard.. 3-2 3-2 ADM-42 Standard Graphic Character Set, Showing

Comparable CTRL Codes . . . 3-26 3-3 ADM-42 Escape Sequence Characters, With HEX

Coding... 3-40

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LEAR SIEGLER, INC.

DATA PRODUCTS DIVISION

LIST OF FIGURES (continued)

FIGURE PAGE

3-4 Chart of Absolute Cursor Positioning Codes... 3-50 3-5 POLL Function Dialogue, Flow Diagram... 3-59 3-6 SELECT Function Dialogue, Flow Diagram... 3-62 3-7 SEQUENTIAL SELECT Function Dialogue, Flow

Diagram. ^!!^• ê ê êê ^..^G ⁰ ^C a . . . a _ • • • • • • • • • • • • • • • • • • • • • • • • 3-64 3-8 FAST SELECT Function Dialogue, Flow Diagram.... 3-66 3-9 B~OADCAST SELECT Function Dialogue, Flow

D~agram. • . •• • •• • •• . • • •. • • • . • ••• • • • • •• • • • .• • • • •• 3-67 3-10 SEND Function Dialogue, Flow Diagram... 3-69

TABLE 1-1 2-1 3-1 3-2 3-3 3-4

LIST OF TABLES

ADM-42 Specifications . . . . ADM-42 Controls and Interface Connectors . . . . Keyboard Operations . . . . Editing Example . . . . Special Control Operations . . . . Dynamic Baud Rate Codes . . . .

PAGE 1-7 2-13 3-4 3-14 3-27 3-54

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LEAR SIEGLER, INC.

PREFACE

This Operator's Manual describes the function and operation of the ADM-42 Data Display Terminal. The instructions and information are presented to aid operational personnel in the installation, operation, and care of the ADM=42. All operator controls are described in detail, and remote programming considerations are presented in sufficient detail to enable an experienced operator to use the equipment efficiently when confronted with non-standard applications.

The major topics described in the manual include:

Section 1 General Description Section 2 Installation

Section 3 Operation

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Figure 1-1. ADM-42 Data Display Terminal

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SECTION 1

GENERAL DESCRIPTION

1.1 INTRODUCTION

This section contains a description of the primary functions of the Lear Siegler ADM-42 Data Display Terminal (see figure 1-1), along with physical dimensions, specifications and ranges, and operating features.

1.2 PURPOSE AND USE

There are numerous applications of the ADM-42, all involving the transfer of data. Data transfer, in some applications, may be almost exclusively unidirectional; either from the ADM-42 to the computer, or from the computer to the ADM-42. A more frequent application of the ADM-42, however, is one in which an operator communicates with a computer, and the computer responds in

accordance with its stored program.

The .. ADM-42 has the following general capabilities:

• Full 128 ASCII character set with 80 x 25 character display

• User controlled status display on Line 25

• Full ADM-2 compatibility

• 15 transmission rates

• Conversational and Block Mode transmission

•

Data key roll-over protection

•

39-Key special functions keyboard

•

lS-Key numeric keyboard

•

Separate cursor control keys

•

Up to eight full pages of memory

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• Program Mode

• Special control character sequences

• Full editing, formatting, and protected fields capabilities

• Variable 10-or II-bit word structures

• Dynamic behavior fpersonality) modification

• Selectable refresh rate

• Reversed, blinking, and blanked fields, with underlining

• Standard RS-232-C interface, RS-232-C extension,

and 20-ma current loop; optional line printer, polling, and synchronous interfaces

1. 3 OPERATIONAL DESCRIPTION

The ADM-42 is a microprogram-controlled device which provides a means of communicating with a remote computer, and which allows the user full control of the content and format of data entered by means of the keyboard. Figure 1-2 illustrates the flow of data through the functional areas of the ADM-42.

The Standard ADM-42 consists of a power supply, keyboard, control section (CPU), video logic and control, CRT display, configuration control switches, and external interface logic. The interface logic permits the following interfaces: an RS-232-C or

20-ma current loop interface through the MODEM port; daisychained devices through the EXTENSION (and MODEM) port; an optional

polling interface through the MODEM port; a parallel or serial printer interface through the AUXILIARY port; and a data set or teletype interface through the SYNCHRONOUS port.

1.3.1 Regulated Power Supply

The ADM-42 power supply is a 65-wat~ regulated and unregulated power supply mounted on a printed circuit borad which is adjacent to the main printed circuit board assembly. Three regulated dc voltages are furnished for use by the CPU: +5 volts, and

±12 volts. Unregulated +5-volt dc power is also supplied and for keyboard circuits. The power supply can accept line voltage inputs of 115 Vac or 230 Vac (with 230 volt transformer and

connections.)

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KEYBOARD

DAI-A AND

CONTROL

..

POWER SUPPLY

CONTROL SECTION

(CPU)

....

25 LINES CRT DISPLAY 80 CHARACTERS

SCREEN PER LINE

DATA AND CONTROL

DATA

SYSTEM DATA

CONFIGURATION I - - - t ... AND CONTROL SWITCHES

VIDEO LOGIC AND

CONTROL

DATA

AND CONTROL

.1

^EXTERNAL

INTERFACE

, ,

OPTION PCBA

SERIAL OR PARALLEL ASYNC PORT

SERIAL OR PARALLEL PRINTER

SYNCHRONOUS PORT

DATA SET OR TELETYPE

1_"

.

^.:;..

DATA •

AND CONTROL

MODEM (RS-232-C)

PORT

r - - - - - - -

20MA CURRENT LOOP

COMPUTER OR MODEM

... DATA "-

~AND CONTROL

EXTENSION (RS-232-C)

PORT

r - --;.... ----, ,

f f

I DAISYCHAIN f I DEVICES I

J I

L _ _ _ _ -1

Data Flow Block T'\.: ____ _

u..L.al::;jl..aUl

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LEAR SIEGLER, INC.

1.3.2 Keyboard

Data to be processed by the terminal is either from the keyboard or is sent from the remote computer. Keyboard entry is made using one of the 118 keys on the keyboard. Each keystroke is encoded into a parallel number which the CPU uses to determine the eventual ASCII'or operational character to be developed and used. Accompanying the character is a keystroke which alerts the program that a character is to be input from the keyboard.

1.3.3 Control Section (CPU)

The Control Section (CPU~ contains the microprocessor and

various integrated circuits which control all the operations of the ADM-42. These operations include: timing and control, data handling and storage, interpreting and responding to control commands from the keyboard and the computer, video control, I/O interfacing, and status control.

Data entered from the keyboard is placed on the Data Bus and sent to the CPU section, which contains the microprocessor and various other integrated circuits and switches. The CPU, executing a stored read only memory (ROM) program, decodes the input data and reformats it into data and control instructions for the video logic and control section.

1.3.4 Video Logic and Control

The Video Logic and Control section contains the display logic needed to drive the CRT, 4k of random access memory (RAM), and character generation circuits, as well as the video logic and IS-inch monitor. The monitor screen can display 25 lines

(including one status line) of data containing as many as 80 characters per line. Data from the CPU is written into the video RAMi control instructions from the CPU cause the contents of the RAM to be periodically displayed on the CRT screen.

1.3.5 External Interface

Data and control information from a remote computer is routed through the MODEM port to the external interface section, and then to the CPU. The CPU causes data to be displayed on the CRT in the same manner as the keyboard data. The interface contains the logic circuitry appropriate for interfacing with RS-232-C point-to-point signals, 20-ma current loop signals, modem logic, and daisychained devices. An option PCBA provides circuits for an RS-232-C serial or parallel printer interface and for a data set or teletype (TTY) interface. The external interface also contains the baud rate clock and baud rate switches which permit the ADM-42 to receive or transmit data at selected baud rates from 50 to 9600 baud.

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The ADM-42 transmits data by retrieving data from the video RAM and placing it on the Data Bus for routing to the

cpu.

The

cpu

reformats the data and routes data and control information to the external interface section over the Data Bus. External interface logic is used to prepare the data and control information for transmission to the appropriate device connected.

1.3.6 System Configuration Switches

Several banks of system configuration switches are provided to control various attributes and characteristics of the ADM-42.

The switches are mounted on the standard and option PCBAs. The characteristics thus controlled include: mode of transmission/

reception, parity, word structure, refresh rate, cursor/display attributes, and polling addresses and modes.

1. 4 PHYSICAL DESCRIPTION

The ADM-42 Data Display Terminal is a complete operational unit.

The terminal consists of three major assemblies: electronics unit, keyboard unit, and monitor unit. The electronics unit contains all the basic logic circuitry, baud rate switches, power supply, fan, cabling, and interface connectors. The standard and option PCBA's are contained in this unit. At the rear of the unit are located the interface connectors, RESET switch, ON/OFF switch, fuse, and power cord.

The keyboard contains 118 alpha numeric and special character keys which are generally arranged like a standard typewriter.

The keyboard and the accompanying solid state logic circuits are used to generate the 128 ASCII characters in the standard ADM-42 character set. Included in this character set are 32 control characters which can be produced by special key operations. A roll-over feature is incorporated in the keyboard to protect against mis-keying. (If a second key is pressed before the key first pressed is released, the second code will not be transmitted until the first key has been released.) The keyboard may be physically moved several feet away from the main terminal without interrupting operations.

The PCBA(s) containing the microprocessor, memory, and logic is (are) the source of all control and coordinating activities in the ADM-42. These circuits transfer keyboard information into the display memory, display the contents of the memory on the CRT, recognize control commands typed at the keyboard, and

execute the commands. The circuits also supervise communications to and from the remote computer and recognize control commands received through the terminal interfaces.

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. LEAR SIEGLER, INC.

The monitor is a fully transistorized unit featuring printed circuit board construction. The display screen is a IS-inch diagonal cathode ray tube (CRT) similar to that of a black-and- white television receiver. The display is a high resolution

matrix of 80 x 25 characters consisting of large letters, numbers, and other symbols. Information on display is refreshed at 50 Hz or 60 Hz, depending on the line frequency. (an internally

located DIP switch must be appropriately set at installation.) Brightness and contrast are individually adjustable by means of controls on the monitor. The monitor may be physically moved several feet from the main terminal without interrupting operations.

The power supply, providing three regulated and one unregulated dc voltages for use by the main PCBA circuits, is contained on its own printed circuit board and mounted near the main PCBA.

The four outputs have a total power rating of 63 watts. The ac input voltage may be either 115 volts or 230 volts at 50 or 60 Hz.

DC output voltages are as follows:

• +5 volts at 1 ampere maximum load, unregulated

• +5 volts at 9.0 amperes maximum load, with +5%

regulation and overload protection

• +12 volts at 0.75 ampere nominal load, with +5% regulation

• -12 volts and 0.4 ampere nominal load, with +5%

regulation 1.5 SPECIFICATIONS

Table 1-1 lists the leading specifications for the ADM-42. In addition, several operational features, such as various transmission modes, character format, word structure, and configuration control are discussed in the paragraphs that follow.

1.5.1 Transmission Modes

Various transmission modes are utilized by the ADM-42; these include the Block and Conversation Modes. The Block Mode permits the operator to edit and perform off-line operations, and then come on-line for the actual transmission of the data. Processing time is limited to the actual transmission time only. In the Conversation Mode, either full-duplex or half-duplex operation is possible. Block and Conversation Modes are selected through the escape (ESC) sequences, or by using the CONV MODE key.

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Table 1-1. ADM-42 Specifications

SPECIFICATION DESCRIPTION

Input Power:

Standard Optional

Power Dissipation Operating Temperature Relative Humidity Altitude

Physical Dimensions

Weight

CRT Screen Size Display Format Character Set

Refresh Rate Cursor:

Format

115 volts +10%, 50/60 Hz;

Single Phase; 3-wire 230 volts +10%, 50/60 Hz;

Single Phase; 3-wire

65 watts, nominal (rated:

0.75A at 120 volts) o 0

Between 41 F (5 C) and 122⁰F (50o F)

From 5% to 95% non-condensing Up to 10,000 feet (3048M) 18.0 in. (45.72 cm) High X

18.9 in. (48.0 cm) Wide X

25.38 in. (64.51 cm) Deep 50 pounds (22.67 Kg)

15 inches (30.5 cm) diagonally 80 characters per line x 25 lines; 8 pages, maximum

128 ASCII characters (with 32 control characters); upper/low- er case fonts; 9 x 11 dot

matrix pattern 50/60 Hertz

(depending upon line frequency)

Reverse video rectangle (10 x 12 dot matrix)

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Table 1-1. ADM-42 Specifications (cont'd)

SPECIFICATIONS DESCRIPTION

Control Left ( ... ); Right (-+); Up ( . ) ; Down ( t ) ; HOME; LINE FEED;

NEW LINE; RETURN; TAB; BACK TAB; position addressing/read- ing

Keyboard:

Construction

Key Assignment

Communications:

Standard Interface Optional Interfaces Data Transmission Rates

Transmission Modes

Code for Transmission 10-Bit Word Format

II-Bit Word Format

Solid state logic; similar to typewriter layout; numeric/

cursor/function/send key pads Data and Special Character Cursor and Format

Special Function Terminal Control

EIA RS-232-C, 20-ma current loop, extension

Serial/parallel printer;

synchronous; polling

50, 75, 110, 134.5, 150, 300, 600, 1,200, 1,800, 2,000, 2,400, 3,600, 4,800, 7,200, 9,600 baud

60 19 16 5

Block Mode; Conversation Mode, Half Duplex; Conversation Mode, Full Duplex-

Asynchronous or synchronous ASCII

(1) 7 data bits; odd/even parity; START bit, 1 STOP bit

(2) 8 data bits; START bit;

1 STOP bit

(1) 7 data bits; START bit;

odd/even parity; 2 STOP bits

(2 ) 8 data bits; START bit;

odd/even parity; 1 STOP bit

... __ ^.---... _-_ ^...

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Block Mode

In the Block Mode, infor.mation is transmitted and received as complete messages or blocks of data (compared with character-by- character operation in the Conversation Mode). The characters are stored and displayed, but are not automatically transmitted.

The operator or the computer enters the complete message, up to two full pages in length. After the message has been completed, the operator can edit the information. The operator may send the message line by line (SEND LINE) or by the page (SEND PAGE), as well as the complete message (SEND MSG). If desired, the

operator may select only part of the information for transmission.

This is done by inserting control characters in the copy during the editing phase. These control characters signal the start of message and the end of message. Then when the SEND MESSAGE

COMMAND is issued, only the copy between the control characters is transmitted.

The Block Mode, besides providing the edit capability, also permits faster transmission of large blocks of data than can be obtained in the Conversation Mode. It also permits more efficient utilization of the remote computer and data transmission lines.

The ADM-42 can operate off-line when the information is being typed and edited, and come on-line only during t'he actual

transmission. Then too, the baud rate can be increased, which results in a reduction of computer time (to receive the ^~nIorma

tion) , as compared to having the operator send the same message in the Conversation Mode.

Conversation Mode, Half-Duplex

In this mode, the ADM-42 can send and receive information to and from the remote computer, but in only one direction at a time.

Characters are displayed, and simultaneously transmitted, one character-at-a-time as they are typed at the keyboard. Received characters are displayed as they are received.

Conversation Mode, Full-Duplex

The ADM-42 can transmit and receive information in both directions simultaneously in full-duplex operation. Characters are transmitted as they are typed, but are displayed only on reception.

In order for transmitted characters to be displayed in full-duplex operation, they must be echoed from the remote computer back to the ADM-42.

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, LEAR SIEGLER, INC.

1.5.2 Character Format

The standard ADM-42 character set contains 128 ASCII characters, 32 of which are control characters that require special key

operations to produce from the keyboard. (See figure 1-3) The entire character set can be displayed on the CRT screen if transmission from computer or keyboard is preceded a command placing the terminal in Program Mode.

1.5.3 Word Structure

The ADM-42 can transmit and receive data characters in anyone of the asynchronous character formats shown in figure 1-4. These word format codes are selected by means of DIP switches located internal to the ADM-42.

1.5.4 Configuration Control

Three sets (banks) of DIP switches are provided on the standard PCBA which can be used to establish or change certain operational characteristics of the ADM-42. Figure 1-5 shows the location of these switches, whose functions are described below.

Switch Location IB

There are four active switches at location lB:

• SW 1 determines the characteristics of the video field designated by a video attribute control code:

ON causes the field to be blank or underline, depending upon which control code was selected; OFF causes the field to be underlined.

• SW 2 determines how the selected video attribute control codes will be displayed on the CRT: ON causes the

codes to be displayed as codes; OFF causes 'the codes to be displayed as spaces.

• SW 3 controls the Graphic Mode attribute (future).

• SW 4 determines whether ADM-42 null codes will be displayed as null codes (ON) or space codes (OFF).

Switch Location 15M

There are seven active switches at location lSB:

• SW 1 controls the operation of the keyboard BREAK key:

OFF disables the key; ON enables the key.

• SW 2 controls the monitor refresh rate: OFF for 60 Hz line frequency; ON for 50 Hz frequency.

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20

30

40

50

60

79 11 OCl

21

31

41

51

61

71 12 OC2

22

32

42

52

62

72 13 OC3

23

33

43

53

63

73 14 OC4

24

34

44

54

64

74 15 NAK

25

35

45

55

65

75 16 SYN

26

36

46

56

66

76

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27

37

47

57

67

77 18 CAN

28

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58

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39 3A 38 3C 3D 3E 3F

49 4A 48 4C 40 4E 4F

59 5A 58 5C 50 5E 5F

69 6A 68 6G 60 6E 6F

79 7A 78 7C 7D 7E 7F

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DIP SWITCH WORD STRUCTURE

WORD FORMAT CONFIGURATIONS

BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT BIT

SW5 SW4 SW3 ^~ ¹ 2 3 4 5 6 7 8 9 1~

r

I

Eleven-Bit Word

ON

I

^St ^even

with Even Parity ON ON a ACTIVE BITS = ¹ ^OR fI stop stop

and 2 STOP Bits r

t parity

i r I I I I

I

^St Î Î Î Î Î

,

Eleven- Bit Word

with Odd Parity ON

I

ÔN ÔFF â ACTIVE BITS = ¹ ÔR ~ odd stop stop

and 2 STOP Bits r

t parity

i I I I I ^t I

I Î Î Î Î Î Î

V(

Ten-Bit Word St even

with Even Parity ON

I

^{OFF ON} ^a ACTIVE BITS = ¹ ^OR ^.0 stop

and 1 STOP Bit r

t parity

I I I I I I I

I I Î Î Î -, I

[X

Ten-Bit Word

I

OFF

St odd

with Odd Parity ON OFF a ACTIVE BITS = ¹ OR 0 stop

and 2 STOP Bits ^rt ^parity

I I I I I I

I I ^I

,

I

Eleven- Bit Word St always

with No Parity OFF ON ON a ACTIVE BITS = ¹ ^OR ~ 0 stop stop

and 2 STOP Bits ^I r t

I I I I I I I

! Î Î Î Î

rx

Ten-Bit Word _St

always

with ~o Parity OFFI ON OFF a ACTIVE BIT S = ¹ ^OR 0 0 ^stop

and 1 STOP Bit ^rt

I ^I ^I I I

,

I

OFFloFF

I I ^I ^I T ¹

E it'veo- Bit Word St always

I.I:ith Even Parity ON ACTIVE BITS = ¹ ^OR ^~ 0 even

stop

:.l parity

:md 1 STOP Bit I ^{r t} I 1 L I ^I I I

I I ^I ^I I

r always

EIE'ven-Bit Word St ₀ odd

with Odd Parity OFF OFF OFF a ACTIVE BITS = ¹ ^OR ^~ _parity^stop

and I STOP BIT ^ft

I I I I I I I

Figure 1-4. Word Format Codes With DIP Switch Configurations

(22)

I-' I I-' W

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I Ul

HUl ::s ^rt

ri- PJ CD ::s

t-;$.).J H1PJ PJ t-;

O$.).J CD 'U

no o ^tJj

!:1 ~

::s CD 0

o 0 rI· a

0'"0 t-; 0

t-t ::s CD

o ::s o rt PJ rI· PJ

... ::s ::s op.

til

~~~TIO~N~F~U~NC~T~ION~WUIT~CHIJL~OC~A~Tl~I~~I~~-Y.~..-~-r.~r.-Tft~

8TO IILANK ATIRI8 ON

fO ~Wt.aCbDC ~fffoN I--I---I--+-II--+-.-l

TO

STO

sro

~:~~I~~~R~'h~ 1--QfF ON+---.~-+---j..--I

GRAPHICM ENA , OFr

OPiVNOLLooor---- - - -oii

OPl Y NULL S P _ _ _ -l_J.:O::..F:..Jf _ _ -'--_-'-_l..~

M 8 I 2 3 4 6 6 1

OAUO RATE RATf POS AAT~

:

^a⁹ ~::

III liII 24l1li 134,6 11 36""

I Sill 12 -6l1li

3111! 13 12W

6W I- 00""

12l1li 16

NOT APPLICABLE MEMORY OPTION OPTION BOARD COMPOSITE VIDEO OPTION ANSWER BACK

AL TERNATE CIlARACTER SET

r - - - -

PiN --_.-._--_ .. -

NO fUNCTION 'T AS'----

3 A7 6 A4 1 A5 9 A2 II A3 13 All 15 Al 17 A9 19 All 21 A8 23 AliI

---~---

PIN flli!!!!§t>!~ffi"~

NO fUNCTION -2- GRO---

4 GAO 6 GAO a GRO III GAO 12 GAO 14 GAD 16 GRO 18 GilD 2fII GRD 22 GAO 24 GAO

NO

26

21 29 31 35 J7 39 41 43 45 47 49

fUNCTION A l 5 ' - - All AI4 AI2 06 04 07 01 I n

O.

03

~6 PIN till,~

26 GRO 28 GAD 311 GRO 32 GRD J6 GRO 30 GAO 411 GAD 42 GAO 44 GHO 46 GHo 48 GAO 5jl~

--

KEY'OARD J1 PI~ PI~

~]

^~O^"3⁴⁶ ^fUNCTION^-12V^CAPlMPAc'fiVi'TY ^16"^NO¹⁶11 ^-IW-^amCONTROL ^FUNCI-ION MONITOA J6 6 'fliAiiSMIT 18 Sinfl PIN 1 A£l:1ffi7E 19 CCiNMIlO

NO FUNCTION 8 GRD 28 GRD

1 EQUIPGRD \I t12V 21 il2V

q

^{] -} ⁴6 ²³ ^HSYNC^VSY/lC^VIDEO ^III¹¹¹²13 ^IOO1t^Ram^KIm}Kiffij ²²²³²⁴26 ^STlfOIIt^RliDil^KII06Kiifj4 C): ;".ESET 6 GRO

@} ^VID[O '-fa ~~~USEO

&

P

~---

}--

EXTENSION J6 MODEMJ4

PIN ~

"' ~ E

.

~"~ 2 RCVR 8a ^I2 *1~hWb XMITOA

3 XMlr UA 3 RCVR 00

.. ^' 4 RTseA 4 RISCA

til

6 crsco 6 C'ISCB

6 OSR CC 6 OSA CC

7 GAD 1 GAD

8 DCOCF a DeoCF

2" ^OTRCD ¹⁰II ^CI.INCliN

~L' 1--' ¹² CU'XMr ...

DeDCf

.,

^~ ¹³ ^CLOUT

2f11 01A CD

PIN 'IN ~~~XT:~S~~_ -,---

PIN NO FUNCTION NO fUNCTION NO fUNCTION NO fUNCTION

I I~ ² ^Gfto- '26 MEMCi:K '26" _G~

3 4 GRO 27 [OW 28 GAO

5 11m 6 GilD 28 YMA 3fII GAD

1 fm1 • ^GRO ³¹ ^R,'JI ³² ^GHo

9 TSC II GilD 33 IOCLK2 34 GRO

11 OW; 12 GAO 3S .a 38 GRO

13 OMAAiW 14 GRD 31 IIEfGNT 38 GRO

It BA 21 GilD 31 ArsrT 41 GilD

21 MEMAOY 22 GilD 41 2XClK 42 GilD

II oaf 24 GAO

(23)

• SW 3, 4, 5 control the MODEM interface word structure, in accordan6e with the settings shown in figure 1-4.

• SW 7 ON enables Pseudo Print control; OFF enables Normal Print control.

• SW S ON establishes CONV MODE Full Duplex operation;

OFF establishes Half Duplex operation. Either setting may be dynamically changed by an escape sequence.

Switch Location l4C

There are five active switches at location l4C:

• SW land SW 2 control the current/loop/secondary channel interface, as follows:

SW 1 ON and SW 2 OFF = Current loop enabled SW 1 OFF and SW 2 ON = Secondary Channel enabled SW 1 and SW 2 OFF = Current loop and Secondary

channel disabled

• SW 3 ON enables internal TSC (Tri state bus control) i

SW 3 OFF enables external TSC.

• SW 4 and SW 5 control the operation of the data bus extension (DBE) logic, as follows:

SW 4 ON and SW 5 OFF = External DBE control SW 4 OFF and SW 5 ON

=

Internal DBE control SW 4 and SW 5 OFF = Not defined

1. 6 ADM-42 OPTIONS

The ADM-42 can be provided with a large number of independently controlled and executed optional features, each requiring

additions and/or alterations to the standard PCBA. (See figure 1-6). The following options are available.

Option No.1 Not applicable

Option No. 2 - Data RAM Extension

This option provides the capability of extending the basic RAM

in the CPU an additional SK, 12K, or 16K by the installation of the appropriate number of 4K RAM chips.

(24)

I-J:j 1-'- to ~

CD 11 f--A I 0'\

1--10

!Jro

ri- n-

CD 1-'- t1 a

I-' l-tl !J

I AI

,~ o ^'1j

U1 (DO

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!JO a

!J a

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SWiTCH Uttt!!I.l.!llli .J!!llilL. 1J,l£1iliQ!i

POLLING· hi ADOA 5 5L

POl.lING 21)\1 AQOA 6 6l GROUP POll· hi ADDA 1 8l GROUP POll 2nd ADDU 8 9l

GAOuP Sf LfCT 9 111

:~N~[~~~--~-';-Ii - 6N ~--_~c 5-_-f!'--+"--__ .t~B'_--._j Bln--- .-- -:1.-- Of ON

BIT 4 8ITG-- --

POll 161 ENA POll lSI OSA POllCOMBtJr·

ENA (6,

G~.rnENA

GAP 11&8) OSA

GAPseTENA--

~i~~_ -I -- OfF

- (IN' - - i'jFf - - ---- - -

~ ON ---- --:- ~F·

ON OFF . -

- - F·

• N

Off

PARALLH PATA PORT ASYNC PATA PORT SYNCHRONOUS pOln POl.lING AOOR~SS SOfTWARE AAM;

lK.7K.3K PROGRAM PROM BUS EXUNSION

I=[~~

~~ EXTENSION 12

PIN PIN

.!'Q. fU~:!!~",! NO fUNCTION A6 2- (iAO"-

A7

.

^GRO

A4 6 GAO

A5 D (jAO

A2 Ie GRD

II AJ 12 GAD

13 ,.. 14 GRO

lfi Al 16 GAD

17 AD 18 GAO

lu All 2~ GRO

21 AD 22 GRII

23 All 24 GRO

26 AI5 26 GRO

21 AI3 28 GRO

29 AI. J, ^GAO

31 AI2 32 GRO

36 06 36 GAD

37 04 38 GAD

39 07 411 GRD

41 01 42 GRO

43 02 44 GUO

45 011 46 GAO

47 03 48 GRO

~ ^OS 51 GAO

~:PU OUS EX TI: NSION J3

PIN PIN

NO fUNCTION NO FUNCTION

l1itFfitil- 2 Gno

3 HALT 4 GRO

6 iliO 6 GAO

7 Nl.lI 8 GRO

9 rs<: I ' GAO

II OlofA 12 GAD

13 OMARiW 14 GRD

19 SA 211 GAD

21 MEMHOY 22 GRO 26 M£MClK 26 GAD 27 ["OW 28 GAO

29 VMA 3g GRO

31 RIW 32 GRD

33 OOCLK2 34 GAO

36 12 36 GRO

37 RHGNl 36 GRO 39 iiieSEf

.-

^GRO

.,

1~_ 42 GAO

r--~'-- - -

~ _ BUS ~~!~~~~ON .:'!~_

~~ ^fUNCflON05--- -~. ^NO~~~el~~

b 03 6 GRD

7 01 8 GAO

9 02 14 GAD

II 01 12 GRD

13 07 14 GRO

16 06 16 GAO

II AI2 16 GAO

19 AI6 211 GAD

21 A8 22 GAO

23 A9 24 GAO

26 AB 26 GAD

27 A2 26 GAD

29 A4 3' GRD

31 A6 32 GRO

J3 MEMAOY 34 GnD 35 RHGNT 36 GRO 37 BOClK2 38 GRO

39 VMA 4, GRO

41 MEMCII( 42 GRO 47 DMARI'ii 48 GRO

49 TSC 61 GRO

ponT Jb PfN

NO FUNCTION T EQUlp·GRO 2 jifoAT;;;

3 PT OAf A 5 CTS AUK 6.8 PRTS

1 GRU 19 peTS 211 !'~~._

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