Texas Instruments 990 Installation And Operation

~~------------------
~ 945423-9701
Paragraph
1.1
1.2
1.2.1
1.2.2
1.2.3
1.2.3.1
1.2.3
.2
1.2.3 .3
1.2.4
1.2.5
1.3
1.4
T ABLE OF CONTENTS
Title
Page
SECTION I. GENERAL DESCRIPTION
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
System Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Communications Register Unit (CRU) ...................................... 1-2
VDT Controller. .................................................... 1-2
Display
Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
CRT Monitor .................................................... 1-5
Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Control Logic. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Keyboard
......................................................... 1-6
Interconnection
Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Purpose of Equipment .................................................. 1-7
Displayed Characters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
SECTION II. INSTALLATION
2.1 General ............................................................ 2-1
2.2 Site Requirements ..................................................... 2-1
2.2.1 Mounting Surface ................................................... 2·2
2.2.2 Cabling Restrictions .................................................. 2-2
2.3 Unpacking/Packing
.................................................... 2-3
2.4 Remote Installation Cable Routing .......................................... 2-6
2.5 Terminal Installation
................................................... 2-6
2.6 Connection to Computer ................................................ 2-9
2.6.1 Location of Controller Circuit Board ....................................... 2-9
2.6.2 Installing the
Controller ............................................... 2-9
2.6.3 Terminal Interrupt. .................................................. 2-12
2.6.4
ComputerPowerOn ................................................. 2-12
2.7 Terminal
Checkout .................................................... 2-12
SECTION III. PROGRAMMING
3.1 General
............................................................ 3-1
3.2 Terminal Controller Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.2.1 Input Interface ..................................................... 3-1
3.2.2 Output Interface .................................................... 3-1
3.3 Screen Initialization .................................................... 3-1
3.4 Keyboard Codes ...................................................... 3-6
3.5
Cursor ............................................................ .3-12
3.6 Sample Routines
..................................................... .3-12
3.6.1 Polling Routine
.................................................... .3-15
3.6.2 Read Keyboard
............. " ....................................... .3-15
3.6.3 Echo
Character to Screen ............................................. .3-16
v
Digital Systems Division

Texas Instruments 990 Specifications

General

Brand	Texas Instruments
Model	990
Category	Desktop
Language	English