Re: Apple II's paddle 3 button

[dalloff@gcfn.org (Dave Althoff Jr)]

Stefano Priore (stefano.priore@inwind.it) wrote:
: Michael J. Mahon <mjmahon@aol.com> wrote:
: > Stefano Priore asked:

: >>To which memory location is paddle 3's button mapped? Some sources seem
: >>to imply that it's mapped to $c064, but according to others this switch
: >>reads joystick #1's X axis...

: > There is no "official" relationship between Paddle 3 ("GC3") and a
: > particular pushbutton, since there are 4 paddle inputs and only
: > 3 pushbutton inputs.

: > The third pushbutton input, usually referred to as PB2 but called
: > "pb3" on p.79 of the Reference Manual, is read at location $C063.

: OK, now I see what confused me. But does this mean that Apple II's
: hardware can't read the status of the fourth pushbutton (PB3)?

There is no fourth pushbutton.  There is no pin for it on the paddle port.

(speaking only of Apple ][-Apple //e.  Not so sure about the IIgs...)

--Dave Althoff, ][.
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