Commodore VIC-20 User Manual page 327

Appendix C
VIC
I/O Pinouts
313
Pin No.
Type
1 +6 V REG (10 rnA max)
2 GND
3
AUDIO
4 VIDEO LOW
5
VIDEO HIGH
FIGURE
C-3. Video port pinout
Pin No.
Type
1
SERIAL SRQ IN
2
GND
3 SERIAL ATN IN / OUT
4 SERIAL CLK IN/OUT
5 SERIAL DATA IN/OUT
6
N/C
FIGURE
c-4.
Serial 110 port pinout