Texas Instruments 990 Manual page 7

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Appendix
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D
E
F
Figure
APPENDIXES (Continued)
Title
Page
German Model 911 VDT Keyboard Arrangement, Hexadecimal Codes, Mode
Character Positions, ASCII, Special Character Set, and Matrix Chart . . . . . . . . . . . . . . . . . . C-1
Swedish/Finnish Model 911 VDT Keyboard Arrangement, Hexadecimal Codes,
Mode Character Positions, ASCII, Special Character Set, and Matrix Chart . . . . . . . . . . . . . . D-1
Norwegian/Danish Keyboard Arrangement, Hexadecimal Codes, Mode Character
Positions, ASCII, Special Character Set, and Matrix Chart . . . . . . . . . . . . . . . . . . . . . . . . . E-1
Japanese Katakana Keyboard Arrangement, Hexadecimal Codes, Mode Character
Positions, Modified ASCII (JIS-8), Special Character Set, Additional 128
Eight-Bit Displayed Character Set, Keyboard Logic Diagram, and
Contact Matrix Information . . . . . . . . • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-1
LIST OF ILLUSTRATIONS
Title Page
1-1 Basic Model 911 VDT Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-0
1-2 Model 911 VDT Block Diagrai.11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1-3 Model 911 VDT Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
i 4 Uniied States Model 911 VDT Standard Keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
1-5 Model 911 VDT Controller/Computer Interface Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-10
1-6 CRU 12-Bit Addressing Scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-11
1-7 CRU Minimum Output Timing Restrictions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-11
1-8 CRU Minimum Input Timing Restrictions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-12
1-9 CRU Output Bit Addressing for Model 911 Video Display Terminal . . . . . . . . . . . . . . . . . . . . 1-14
1-10 CRU Input Assignments for Model 911 Video Display Terminal . . . . . . . . . . . . . . . . . . . . . . .1-14
1-11 Model 9i i VDT Keyboard-to-Power/Logic PWB Signal Interface . . . . . . . . . . . . . . . . . . . . . .1-20
1-12 Model 911 VDT Power/Logic PWB-to-VDT Controller Interface . . . . . . . . . . . . . . . . . . . . . . .1-20
1-13 Model 911 VDT Power/Logic PWB-to-VDT Controller Data Format. . . . . . . . . . . . . . . . . . . .1-21
1-14 Model 911 VDT Controller-to-Power/Logic PWB Interface . . . . . . . . . . . . . . . . . . . . . . . . . .1-21
1-15 Model 911 VDT Power/Logic PWB-to-CRT Monitor Signal Interface . . . . . . . . . . . . . . . . . . . .1-22
1-16 Model 911 VDT Detailed Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-25
1-17 Model 911 VDT Keyboard Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-27
1-18 Model 911 VDT Keyboard Contact Matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-27
1-19 United States Model 911 VDT Keyboard with Keys Numbered . . . . . . . . . . . . . . . . . . . . . . . 1-28
1-20 Model 911 VDT Mode Select Logic and Truth Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-34
1-21 Model 911 VDT Power/Logic PWB Detailed Block Diagram of Keyboard
Data Path, Video, and Audio Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-35
1-22 Model 911 VDT Power/Logic PWB Power Supply Block Diagram . . . . . . . . . . . . . . . . . . . . . .1-37
1-23 Model 911 VDT Power/Logic PWB UART Transmitter Timing Diagram . . . . . . . . . . . . . . . . . .140
1-24 Model 911 VDT LED Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
1-25 Model 911 VDT Repeat Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
1-26 Model 911 VDT Power/Logic PWB Dual-Gain Video Amplifier . . . . . . . . . . . . . . . . . . . . . . . 142
1-27 Model 911 VDT Power/Logic PWB Vertical Sync Generator Schematic Diagram . . . . . . . . . . . .143
1-28 Model 911 VDT Power/Logic PWB Auxiliary H-Sync Generator Schematic Diagram ........ .143
1-29 Model 911 VDT Power/Logic PWB Audio Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
1-30 Model 911 VDT CRT Monitor Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
vii
Digital Systems Division