Re: A2 Gameport and/or Internal Game Connector

[Jeff Blakeney <CUTjblakeney@sympatico.ca>]

On Thu, 29 Jan 2004 09:07:33 -0500, joe <forspam@wideopenwest.com>
wrote:

>The internal port is probably a bit more useful, especially on the IIgs, 
>  where all 4 buttons are available.  It should be fairly easy to make a 
>simple adapter for it.  Note that older Apples will have a slightly 
>different internal port so a different adapter would be needed.  My IIgs 
>hardware reference is in hiding at the moment, but from 
>http://www.callapple.org/apple2/manuals/gsowners/page164.html I get this:
>
>1  +5 volts
>2  Switch 0/OA
>3  Switch 1/CA/Option
>4  Switch 2
>5  Strobe output
>6  Paddle 0
>7  Paddle 2
>8  Signal ground
>
>9  No Connection
>10 Paddle 1
>11 Paddle 3
>12 Annunciator (1 bit output)
>13 Annunciator  "
>14 Annunciator  "
>15 Annunciator  "
>16 No Connection

You mention the IIgs having four switch inputs but the pinout you
posted doesn't list Switch 3.  Looking in my IIgs hardware reference I
see that you have two pins listed wrong above.  Pin 5 is a +5 volts
pull-up and pin 9 is switch 3.

-- 
 Jeff Blakeney - Dean of the Apple II University in the
                 Apple II Community on Syndicomm.com
 CUT the obvious from my address if you want to e-mail me