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Re: A2 Gameport and/or Internal Game Connector
zeroone wrote:
>Just wondering if it is possible to have a pair of Apple II joysticks
>hooked up at the same time to the Apple II 9 pin game port (as found on
>the back of all the IIe, IIc, IIc+, IIgs computers), possibly with a Y
>cable?
>
>Were there ever any "head to head" type games created for the Apple II
>series of computers which allowed two joysticks to be used in the above
>fashion at the exact same time or did that require a special dual port
>expansion card in one of the expansion slots?
>
>I realize that early on, during the original ][ and ][ Plus days, Apple
>included the pair of Apple paddle controllers which hooked up to the
>internal 16 pin game connector on the motherboard, and I was just
>wondering if something similar could be achieved with a pair of standard
>A2 joysticks hooked up to the 9 pin gameport...
>
>Also, using the pin-outs of the A2 game port, which are the X and Y axis
>pins (obviously the paddle related pins), In other words, pins 4, 5, 8,
>9....what are their respective functions and for which joystick/paddle,
>assuming more than one joystick can be hooked up at the same time to this
>9 pin gameport connector?
>
>
>A2 Gameport pin-outs
>--------------------
>1 Switch 1 (Option Key - a.k.a Solid Apple Key)
>2 +5 volts
>3 Signal Ground
>4 Paddle 2
>5 Paddle 0
>6 Switch 2
>7 Switch 0 (Open Apple Key)
>8 Paddle 1
>9 Paddle 3
Yes, two joysticks can be attached easily.
Paddle 0 and 1 are typically X and Y axes of the first joystick,
and paddle 2 and 3 would be X and Y for the second.
Since there are only three buttons, one is typically allocated
to each joystick, with Switch 0 being for the first and Switch
1 for the second (though some games may make other
assignments). Switch 2 is used for the Shift key mod, and
so is somewhat different from the others.
-michael
Check out amazing quality sound for 8-bit Apples on my
Home page: http://members.aol.com/MJMahon/