Texas Instruments 990 Installation And Operation

~~------------------
~ 945423-9701
COMPUTER MEMORY WORD
SELECTA-(CRU PORT. SELECT
FOR VDT 0)
SELECTA-(CRU PORT SELECT
FOR VDT 0)
* JAPANESE KATAKANA MODEL
ALPHANUMERIC~O ;KATAKANA MODE~ I
IA) 134321 A
CRT CONTROLLER
CRU BITS
•
•
•
DISPLAY MEMORY WRITE DATA
O/TEST MODE SEL.ECT 0
!
1/
2/
2 2
3
4
3/TE5T MODE SEL.ECT 3
4
5 5
6
DISPLAY MEMORY WRITE DATA 6
7
8
HIGH INTENSITY=O; L.OW INTENSITY~ 1 *
WRITE DATA STROBE
9 TEST MODE
A CURSOR MOVE (O=lNCREMENT; 1 =DECREMENT)
B BLINKING CURSOR ENABL.E
C
KEYBOARD INTERRUPT ENABLE
o DUAL INTENSITY (HI/L.O INTENSITY) ENABL.E
E DISPLAY ENABLE
F SELECT WORD O~O: SELECT WORD 1 =1
o CURSOR ADDRESS L.SB
2
3
• 4
•
•
5
6
7
8
9
A CURSOR ADDRESS MSB
B NOT USED
C
DISPLAY CURSOR
o KEYBOARD ACKNOWL.EDGE STROBE
E BEEP ENABL.E STROBE
F SELECT WORD O~O; SELECT WORD 1 ~ 1
Figure 3-4. Computer Output Bit Assignments for Terminal 0
3-7
Digital Systems Division

Texas Instruments 990 Specifications

General

Brand	Texas Instruments
Model	990
Category	Desktop
Language	English