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Cables and Connectors
The keyboard cable connects to the system with a 5-pin DIN
connector, and to the keyboard with a 6-position SDL connector.
The following table shows the pin configuration and signal
assignments.
DIN Connector
SDl Connector
Signal Name
Signal Type
Pins
Pins
1
C
+KBD ClK
Input/Output
2
E
+KBD DATA
Input/Output
3
A
Reserved
4
D
Ground
Power
5
B
+5.0 Vdc
Power
F
Not used
Shield
Shield
Frame Ground
2
DIN Connector
Sequencing Key-Code Scanning
SDL Connector
The keyboard detects all keys pressed, and sends each scan code
in the correct sequence. When not serviced by the system, the
keyboard stores the scan codes in its buffer.
lOl/102-Key Keyboard
4-23
- Quick Links:
- Section 1. System Board
- 64/256K System Board
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