Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!julius.cs.uiuc.edu!rpi!peck
From: peck@ral.rpi.edu (Joseph Peck)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: drawingpad
Keywords: drawingpad
Message-ID: <QH!&N+|@rpi.edu>
Date: 30 Jan 91 14:44:32 GMT
References: <1991Jan25.095710.6716@daimi.aau.dk> <793@cbmger.UUCP>
Organization: Rensselaer Polytechnic Institute, Troy NY
Lines: 34
Nntp-Posting-Host: ral.rpi.edu

In article <793@cbmger.UUCP> peterk@cbmger.UUCP (Peter Kittel GERMANY) writes:
>In article <1991Jan25.095710.6716@daimi.aau.dk> pilgrim@daimi.aau.dk (Jakob G}rdsted) writes:
>>Before you read any further: This is just a silly idea I want to tell the
>>world about!

[...]

>And recently there was a discussion here how to connect a Koala pad
>from the C64 to the Amiga. As far as I remember they said it could
>be done, but nobody gave the real pinout or a listing of the needed
>driver (because this would connect to the analog pot inputs and not
>to the impulse-driven mouse inputs).

Well, I just received the schematics and a little software hack
from Jeff Lavin yesterday.  As soon as I make a little correction
to the schematic (Jeff, you labelled both the resistor and the
potentiometer to be changed as R1, instead of R1 and R37.  Or
something like that, I am typing this from memory.) I will 
lharc it, and ftp it to abcfd20.

I intend on uploading it as koala64.lzh.  This is because I took
apart my atari version, and ummmm, it looks nothing like the
schematic that jeff sent me :(  This schematic is for the 
Commodore 64 version, model 2.  I did try the accompanying
software, and it seemed to behave properly.  But, it is hard to 
say for sure, since the pad is set for a different sampling rate.
I plan on swapping resistors in mine until it works.....

I will post another message once I have actually ftp'ed it to 
abcfd20.  Oh yeah, I have never done this before, so be patient
if my first attempt mangles the file :)

Joe Peck
peck@ral.rpi.edu