Cartridge port

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Cartridgeport.jpg

The VIC-20 cartridge port is also referred to as the memory expansion port, or expansion port. It is a .156" pitch socket on the left-hand side of the VIC-20 and provides a direct bus link to the computer for adding all kinds of devices. It was mostly used for video game cartridges and peripherals such as memory expansion.

Pinout

Pinouts - expansion.png

Pin Connection Pin Connection
1 GND A GND
2 CD0 B CA0
3 CD1 C CA1
4 CD2 D CA2
5 CD3 E CA3
6 CD4 F CA4
7 CD5 H CA5
8 CD6 J CA6
9 CD7 K CA7
10 BLK1 L CA8
11 BLK2 M CA9
12 BLK3 N CA10
13 BLK5 P CA11
14 RAM1 R CA12
15 RAM2 S CA13
16 RAM3 T I/O2
17 VR/W U I/O3
18 CR/W V S02
19 IRQ W NMI
20 X RESET
21 +5V Y
22 GND Z GND