Atari 800

Controller Port Pinout:
PIN
JOYSTICK
1
Forward
2
Back
3
Left
4
Right
5
6
Trigger Button
7
8
GND
9
* Write
** PORTA or PORTB
Male
(console)
Controllers
PADDLE (POT)
A(Left)Trigger
B(Right)Trigger
POT B(Right)
+5
GND
POTA (Left)
*** STICK 0, 1, 2 or 3
III. 24
Female
(connector)
HARDWARE
KEYBOARD REGISTERS
Top Row* Bit 0 or
4**
2nd
Row*
Bit
1 or
5**
3rd
Row* Bit 2 or
6**
Bottom
Row* Bit 3
or
7**
1st
Column POT 1,3,5,7
3rd
Column
TRIG0,1,2,3
+5
2nd Column
POT 0,2,4,6
OS
VARIABLES
Bit
0***
Bit
1***
PTRIG0,2,4,6
Bit 2***
PTRIG1,3,5,7
Bit 3***
PADDL1,3,5,7
STRIG0,1,2,3
~
PADPL0,2,4,6l