Re: [stella] Some thoughts that hit me while the power was out

Subject: Re: [stella] Some thoughts that hit me while the power was out
From: emooney@xxxxxxxxxxxxxxxx (Erik Mooney)
Date: Thu, 20 May 1999 23:27:33 GMT
>1)  I just got Astroblast (or Astrosmash to us purists) for my 2600. 
>As I looked over the instruction manual, it mentions that it can be
>played with either the joystick or paddles.  Now, my Saturn can
>distinguish between different controllers that get plugged in even
>while running a program, but the Atari doesn't have any "identifiers"
>that I'm aware of.  How does the game know which controller is plugged
>in so it can respond properly?

It'd be pretty easy: just read from the paddle input.  If there's no
paddle there, the input will be higher than any possible case where there
is a paddle.  (open circuit, infinite resistance being higher than any
resistance a paddle can provide.)  That might not be how Astroblast does
it, but it's how I'd do it.  I believe Astroblast only checks at powerup,
or maybe at game start.

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