Subject: Re: [stella] 6532 port A input only? From: Chris Wilkson <ecwilkso@xxxxxxx> Date: Thu, 22 Apr 2004 14:36:42 -0400 (EDT) |
The keyboard controllers do. They are constucted as an x-y grid. The 4 RIOT lines are connected to x[3:0]. The trigger input and the 2 paddle inputs are connected to y[2:0]. E.g. you first set x[3:1] to 0 and x[0] to a 1 (or vise-versa) then read the the 3 inputs to see if any of those buttons are pressed. This pattern repeats for the other x values. I believe the paddles operate in a similar way. Set the necessary outputs to 1, then read the paddle inputs. Kirk you've done this recently, do I have it right? -Chris On Thu, 22 Apr 2004, Adam Wozniak wrote: > Do any games or controllers configure the 6532 (RIOT) port A pins > as outputs, or are they always used input only? > > I suspect the various development tools that use the game controller > ports as serial ports must configure port A pins as outputs, but does > anything ELSE do this? > > -- > adam@xxxxxxxxxxxxxxxx http://cuddlepuddle.org/~adam/pgp.html > http://cuddlepuddle.org/~adam/resume.html > "The dinosaurs are not around today because they did not have a space program." > -- Arthur C. Clarke > > ---------------------------------------------------------------------------------------------- > Archives (includes files) at http://www.biglist.com/lists/stella/archives/ > Unsub & more at http://www.biglist.com/lists/stella/ > > ---------------------------------------------------------------------------------------------- Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://www.biglist.com/lists/stella/
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