CIA CSG 6526A
Input / Output

 

CIA Complex interface adaptor.
C64 contain twp of this chip.

2x 9 pin joystick/ mouse/ paddles/ lightpen
44 pin female edge conn. cartridge interface
8 pin DIN-41524 audio/video
6 pin round-DIN CBM serial IEC-bus
12 pin male edge conn. CBM cassetteport
24 pin male 8 bit programmable user port
RF TV-out
7 pin round-DIN power supply-conn at 9V