Re: help: Koala pad/connector info

[u901841@student.canberra.edu.au (Hickey / Michael Gerard (ISE))]

In article <1994May5.230112.1@csc.canterbury.ac.nz> misc176@csc.canterbury.ac.nz writes:
>In article <2ps47f$2vh@magus.cs.utah.edu>, galt@asylum.cs.utah.edu (Greg Alt) writes:
>> I recently bought a Koala Pad for $1 at a thrift store, and it is the 
>> apple 2 version.  I'd like to figure out how to connect this to another
>> machine
>
>This plugs into the Apple internal 16 pin game port. Its towards the back of
>the case, on the right hand side.
>I'm not sure if you'd be able to adapt it to another computer, because the way
>that the Apple II (any Apple II) reads the paddle controls (or X/Y on the pad
>is fairly specific. It involves using a 555 timer (4 of them in a 558 package.)
>The resistors in the paddle circuits form part of a timing circuit, and the
>reading of the paddle position is simply the time read by the 555. IBM's use a
>similar circuit I think, so you could _try_ to hook it up to one of them. I
>havn't got my II manual with me right now, but I'll try to get the pinouts
>posted soon, if noone else does.
>-- 
>o---------------------------------------------------------------------------o
>  From Philip Lamb (Internet: P.Lamb@CSC.Canterbury.AC.NZ
>                          or: MISC176@CSC.Canterbury.AC.NZ )
>  Canterbury University, Christchurch, New Zealand.

It _will_ run on an IBM joystick connector... the electrics (but not the
pinouts) are very similar! I have a friend who uses an Apple joystick with
an adaptor cable to connect to his '286

The 16 pin connector inside an Apple II, +, e, GS (NOT IIc) has pinouts
thusly: 

1	+5 volts (not more than 100ma)
2	Paddle button 0
3	""""""""""""" 1
4	""""""""""""" 2
5	strobe output (line goes low when read or write of location $C040)
6	Paddle 0 (joystick 1 x coord, I think)
7	Paddle 1 (joystick 1 y coord)
8	ground
9	not connected
10	Paddle 2 (joystick 2 x coord)
11	Paddle 3 (joystick 2 y coord)
12	annunciator 3 (std 74LS TTL outputs)(to trigger, say, a TTL relay)
13	annunciator 2
14	annunciator 1
15	annunciator 0
16	not connected

       __  |\    Michael Hickey
     .^  |_| \_
  ^-'          \   u901841@student.canberra.edu.au
 /    Canberra  \
 \      ___   \./    35.17S 148.08E
  \_.--'  "v_._/
             v