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controls:ti994a_controller [2019/08/27 20:45] (current)
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 +{{http://​www.gamesx.com/​grafx/​conn_dsub9m.gif}}
  
 +^Pin^Function^
 +|1|NC|
 +|2|Enable Stick 2|
 +|3|Up|
 +|4|Fire Button|
 +|5|Left|
 +|6|NC|
 +|7|Enable Stick 1|
 +|8|Down|
 +|9|Right|
 +
 +The TI-99/4A read it sticks like so: the 4A would poll one of the two sticks by pulling the voltage down from +5V to -5V (ideally; effectively,​ it went down to around -0.5V), and that joystick would send its position over the four directional lines. ​ The 4A would then do the same for the other stick, etc.  The fire button, however, is never individually polled: both sticks'​ fire buttons were the same, as far as the 4A could see.
 +
 +More info can be found at [[http://​www.stanford.edu/​~thierry1/​ti99/​joystick.htm|Thierry Nouspikel'​s site]], including how to make an adaptor allowing one to hook up a [[pc_game_port|analog PC joystick]] to the 4A.
 
 controls/ti994a_controller.txt ยท Last modified: 2019/08/27 20:45 (external edit)
 
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