Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!purdue!decwrl!hplabs!hp-sdd!ucsdhub!sdcsvax!beowulf!kim
From: kim@beowulf.ucsd.edu (Geoffrey K Kim)
Newsgroups: comp.sys.amiga
Subject: Re: Mouse Extension Cable?
Message-ID: <7500@sdcsvax.UCSD.Edu>
Date: 22 Nov 89 18:05:43 GMT
References: <8911202324.AA04585@astro.psu.edu> <793@wet.UUCP>
Sender: nobody@sdcsvax.UCSD.Edu
Reply-To: kim@beowulf.UCSD.EDU (Geoffrey K Kim)
Organization: EE/CS Dept. U.C. San Diego
Lines: 21

>In article <8911202324.AA04585@astro.psu.edu> antunes@ASTRO.PSU.EDU (Alex Antunes) writes:
>>Hi!  I picked up a standard joystick extension cable to use with my
>>mouse.  Although my mouse spins well enough with it, though, the
>>two buttons do not register at all with the cable.
>

This problem is caused by the fact that the four position joysticks commonly
used on Atari, C64, Amiga, et al. do not use all nine pins of the DB9 port.  
To save money, some joystick extensions similarly do not pass these pin 
signals.  As a result, the mouse button presses get ignored because they
never get received.  So, the moral of the story: when using/buying a 
joystick extension for use with the Amiga check to see that all pins are
present and passed through to the other side.  BTW, the extenders at
Rad-Shack do this and work very well (and a very good source for molded
DB9 cords for trackball mods).


+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| kim @beowulf.UCSD.EDU (Home of the Garden Weasles)                  |
|        "... ENGAGE!" -- Jean Luc Picard, STTNG                      |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+