Commodore 128 Keyboard

The C128 keyboard is designed to be connected by one 12- and one 13-pin internal single-in-line connector.

1 Ground
2 Key
3 Restore
4 +5V
5 Row 3
6 Row 6
7 Row 5
8 Row 4
9 Row 7
10 Row 2
11 Row 1
12 Row 0
13 Column 0
14 Column 6
15 Column 5
16 Column 4
17 Column 3
18 Column 2
19 Column 1
20 Column 7
21 K0
22 K1
23 K2
24 40/80
25 Alpha Lock

Source: Commodore 128 Programmer's Reference Guide

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