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LA120 Keyboard History
CEF32
LA120 Keyboard
This is a keyboard component that uses a DEC LA120 (DecWrite III) keyboard layout.
There is a small alphanumeric display on the keyboard, which is accessed by writing to the keyboard component's memory. Memory address 0 is for the far-right character of the display; address 1 is for the next-to-far-right character; address 2 is for the next character to the left, and so on. There is room for roughly 4 characters on the display.
The keyboard has the following keys:
Key Name
|
Description
|
BREAK
|
|
CAPS LOCK
|
|
CONTROL
|
|
HERE IS
|
|
LEFT_SHIFT
|
|
LINE LOCAL
|
|
LOCAL LINE FEED
|
|
LOCAL FORM FEED
|
|
NKP_0
|
0 on the numeric keypad.
|
NKP_1
|
1 on the numeric keypad.
|
NKP_2
|
2 on the numeric keypad.
|
NKP_3
|
3 on the numeric keypad.
|
NKP_4
|
4 on the numeric keypad.
|
NKP_5
|
5 on the numeric keypad.
|
NKP_6
|
6 on the numeric keypad.
|
NKP_7
|
7 on the numeric keypad.
|
NKP_8
|
8 on the numeric keypad.
|
NKP_9
|
9 on the numeric keypad.
|
NKP_.
|
. on the numeric keypad.
|
NKP_,
|
, on the numeric keypad.
|
NKP_-
|
- on the numeric keypad.
|
NKP_ENTER
|
Enter on the numeric keypad.
|
PF1
|
|
PF2
|
|
PF3
|
|
PF4
|
|
RIGHT_SHIFT
|
|
SET-UP
|
|
The component also supports the following LEDs:
Name
|
ALT CHAR SET
|
CTS
|
DSR
|
LED 3
|
LOCAL
|
ON LINE
|
PAPER OUT
|
SETUP
|