Table Of Contents - IBM 2250 3 Manual

INTRODUCTION •
2250 OPERATIONS
General
Displays
Vectors and Points .
Characters
Light Pen.
Alphameric Keyboard.
Programmed Function Keyboard
2840 OPERATIONS WITH ATTACHED 2250's
Orders
Order Fonnat
Graphic Mode Orders .
Character Mode Orders
Control Mode Orders .
Light Pen Mode Orders
Display Regeneration .
Display Regeneration Timing
2840 OPERATIONS WITH THE CHANNEL
Interface Operations .
Commands .
Write Buffer Command
Read Commands .
Figure 1 Attachment of 2840-2/2250-3 Configuration
to System/ 360 •
Figure 2 Example of a 2250 Display •
Figure 3 Functional Sections of a 2250-3
Figure 4 Display Area Coordinate Addressing System.
Figure 5 Examples of Display Area Coordinate
Address Modification by the 2250 .
Figure 6 Character Set and Code Assignments .
Figure 7 Character Grid Coordinate System
Figure 8 Strokes that Fenn the Letter "A"
Figure 9 Character and Line Spaces
Figure 10 Fiber Optic Light Pen .
Figure 11 Alphameric Keyboard.
Figure 12 Programmed Function Keyboard
Table 1 Character Display Characteristics •
Table 2 Mode Orders.
Table 3 Displayable Vectors Per 2250-3 at a Regener-
ation Rate of 40 cps
Table 4 Displayable Vectors Per 2250-3 at a Regen-
eration Rate of 30 cps
Table 5 Displayable Characters Per 2250-3 at a
Regeneration Rate of 4-0 cps
5
7
7
8
9
10
12
12
15
17
17
17
17
20
21
23
25
26
31
31
32
33
34
5
7
8
9
9
11
12
13
13
14
14
16
11
19
28
29
30
CONTENTS
Control Commands
Sense Command
36
38
Instructions • 39
Test I/O • 39
Halt I/O . 39
Examples of 284-0/2250 Operations 39
Example 1. Displaying an Image on One 2250 39
Example 2. Nonnal Light Pen Operation - 2250 Equipped
with Programmed Function Keyboard . 41
Example 3. Alphameric Keyboard Operation 42
Graphic Design Operations 42
Entities • 42
Buffer Subroutines 43
Input by Light Pen Search 43
Input by Light Pen Tracking. 43
Feedback by Light Pen Tracking History. 43
CONTROLS AND INDICATORS. 53
Basic Operator Controls and Indicators 53
Metering . 54
APPENDIX A: HEXADECIMAL - DECIMAL CONVERSION 56
APPENDIX B: STATUS-SENSE COMBINATIONS 61
GLOSSARY
INDEX
Figure 13
Figure 14
Figure 15
Figure 16
Figure 17
Figure 18
Figure 19
Figure 20
Figure 21
Figure 22
Table 6
Table 7
Table 8
Table 9
Table 10
Table 11
Table 12
64
65
ILLUSTRATIONS
Functional Sections of the 2840-2 and a
2250-3
18
Read Manual Input Command Response . 35
Programmed Function Keyboard Overlay
(Top View)
36
Buffer Program Example Display 40
Sequence of Routines in Light Pen Tracking
History Programming Example • 47
Flow Diagram of Example Program 49
Point Pattern Used in Example Program
51
Vector Pattern Used in Example Program
52
2250-3 Operator Controls and Indicators . 53
2840-2 Operator Panel
54
TABLES
Displayable Characters Per 2250-3 at a Regen-
eration Rate of 30 cps 30
Status Byte Bit Assignments • 32
Commands Used with the 284-0-2 33
Sense Bit Assignments 38
Buffer Program Example 41
Sample Entity Routine 42
Feedback by Light Pen Tracking History,
Example Routine 44