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Texas Instruments 990 - Page 206

Texas Instruments 990
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945424-9701
Japanese Katakana:
Contact Matrix, Keyboard
...
1.4.1.1, Appendix F
Controller Circuit Board . . . . . . . 1.2.3 .1, 1.3 .1.6
Operating Instructions,
Diagnostic . . . . . . . . . . . . . . . . . . . . 2
.3
.2
.2
Programming Description,
Diagnostic
....................
2.3.2.2
VDT Keyboard Information
.......
Appendix F
KBACKQ
.........................
1.4.4.3
KBAKQ
..........................
1.4.4.3
KBASQ
..........................
1.4.4.3
KBDT,1-8
..................
1.3.2.1, 1.4.2.1
KBDRQ
..........................
1.4.4.3
KBD,0-7,Q
........................
1.4.4.3
KBRDYL.
........................
1.4.4.3
KBSIN-
..............
1.3.2.2, 1.4.2.1, 1.4.2.5
KBTL
.......................
1.4.4.2,
Tl-6
Key Codes, Universal . . . . . . . . . . . . . . . . . .
Tl-5
Keyboard
..............
1.2, 1.2.1, 1.4.1,
Fl-19
Acknowledge
..........
1.2.3, 1.3.1.6, 1.4.4.3
and Video Data Path Logic
...........
1.2.2.2
Data
................
1.3.1.6, 1.3.2.7, 1.3.3.1
Data Path
........................
Fl-21
Data Ready
...........
1.2.3, 1.3.1.6, 1.4.4.3
Data Strobe
.....................
1.3.2.2
Electronics. . . . . . . . . . . . . . . . . . . . . . . . 1.2
Fault Isolation Procedures
.............
2.5
.2
Interrupt Enable
..................
1.3.1.6
Logic
...............
1.4.4.3,
Fl-34,
Fl-35
Maintenance Procedures . . . . . . . . . . . . . . . 2.5
Matrix
..........................
F24
Operational Checkout
...............
2.5.3
Parity Error
.....................
1.3.1.6
Preliminary Checkout
................
2.5
.1
Simulation Data
...................
Tl-2
Keyboard-to-Power/Logic
PWB
Interface
...................
1.3.2, Fl-11
LDCR
.....................
1.3.1.2, 1.3.1.4
LED Display
..................
1.4.2.4,
Fl-24
Loading the Diagnostic
................
2.3.2.1
Maintenance
.....................
Section
II
Maintenance Philosophy . . . . . . . . . . . . . . . . . 2.2
Memory:
Addressing Logic. . . . . . . . . . . . . . . . . . .F
140
Array
.........................
1.4.4.5
Control Logic
....................
1.4.4.5
Read
...........................
F142
Read and Write Control Logic
..........
Fl-39
Write
...........................
F141
Memory/CRU Input Data Register
........
1.4.4.5
Mode:
Keys and Mode Select Logic
..........
1.4.1.3
Select Logic
......................
Fl-20
Modem Audio
......................
1.3.4.3
Modify VDT Memory /Scope Loop Verb
(CD)
..........................
2.3.2.3
MODIN
..........................
1.3.4.3
MODSELA-
......................
1.3.1.5
MODSELB-
.......................
1.3.1.5
Module Select (MODSELA- and
MODSELB-)
....................
1.3.1.5
Multiple-Bit Operations
...............
1.3.1.2
NKBINT
...................
1.3.1.5, 1.4.4.3
NKBINT*
........................
1.3.1.5
NLEDL.
.....................
1.4.4.2,
Tl-6
NLEDL*
.........................
1.4.4.2
NTRL.
......................
1.4.4.2,
Tl-6
NVIDL
..........................
1.4.4.1
Oscillator
.........................
1.4.4.8
Power/Logic
PWB
..........
1.2.2.2, 1.4.2, Fl-21
Fault Isolation Procedures
.............
2.6.2
Maintenance Procedures . . . . . . . . . . . . . . . 2.6
Preliminary Checkout.
...............
2.6.1
Power/Logic PWB-to-CRT Monitor
Interface
...............
1.3.5,
Fl-15,
Tl-3
Power/Logic PWB-to-VDT Controller
Interface
..............
1.3.3,
Fl-12,
Fl-13
Power Supplies
.....................
1.2.2.2
Previous State. . . . . . . . . . . . . . . . . . . . . . 1.3 .1.6
Flag
..........................
1.4.4.4
or Self-Test
.....................
1.3.1.6
PREVWlQ
....................
1.4.4.2,
Tl-6
Printed Wiring Board Preliminary
Checkout
........................
2.4.1
PWB
Audio Circuitry
..................
F 1-29
Read Data Latches
...................
1.4.4.5
Refresh Memory
..........
1.4.4.5,
Fl-30,
Fl-37
Repeat
..........................
1.3.2.3
Logic
....................
1.4.2.5,
Fl-25
REPEAT-
..................
1.3.2.3, 1.4.2.5
REPEAT Key
......................
1.4.2.5
Reset Keyboard Interrupt
...............
1.2.3
Row Decoder
ROM
.............
1.4.4.8, Tl-11
SBZ
............................
1.3.1.4
Scoping Loops
.....................
2.4.2.1
Screen Refresh Cycle . . . . . . . . . . . . . . . . .
.F
143
Self-Test
.........................
1.3.1.6
Mode
.....................
1.2.3, 1.4.4.2
Single-Bit Operations
.................
1.3.1.1
Software Alarm
......................
1.2.3
Special:
Test Equipment . . . . . . . . . . . . . . . . . . . . 2.3
Verbs
.........................
2.3.2.3
STCR
.....................
1.3.1.2, 1.3.1.4
Software Interface
...................
1.3.1.6
STORECLOCK-
..........
1.2.3, 1.3.1.4, 1.3.1.5
Swedish/Finnish Model 911 VDT Keyboard
Information . . . . . . . . . . . . . . . . . Appendix D
Sync:
Decoder
ROM
...............
1.4.4.8,
Tl-12
Generator
......................
1.4.4.8
Timing Diagram
...................
Fl-54
System Description . . . . . . . . . . . . . . . . . . . . 1.2
TB
.............................
1.3.1.4
TBRLD-
...................
1.4.2.2, 1.4.2.5
Index-3
Digital
Systems
Division

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