3 1 5 4 2
1. Composite Luminance
2. Ground
3. Audio Output
4. Composite Video
5. Composite Chroma
Atari FAQ says this is on "all but 400, N. American 600XL, XE Game System, SECAM systems"
Atari FAQ says composite chroma is
"not on 800XL,1200XL; grounded on 600XL",
but on my late-model 800XL it certainly is, and has been used to
drive S-video.
2 12 o o o o o o o o o o o o o 1 13
1. Clock Input 8. Motor Control 2. Clock Output 9. Proceed 3. Data Input 10. +5V/Ready (not on 1200XL) 4. Ground 11. Audio Input 5. Data Output 12. +12V (400,800 only. 1400XL/1450XLD?) 6. Ground 13. Interrupt 7. Command
1 2 3 4 5 o o o o o o o o o 6 7 8 9
CX22 trackball meanings from Steve Wallace: 1. (Joystick) Forward Input X Direction 2. (Joystick) Back Input X Motion 3. (Joystick) Left Input Y Direction 4. (Joystick) Right Input Y Motion 5. B Potentiometer Input 6. Trigger Input / Light Pen Input. Port 4 only on 400 7. +5V 8. Ground 9. A Potentiometer Input