[comp.sys.amiga.hardware] Gameport doesn't work correctly

rcstack@rwb.urc.tue.nl (Studenten Vereniging Stack) (03/06/91)

I'm posting this for a friend who can't post news himself. So don't reply to
me; reply to one of the mail-addresses below. *please*

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

I have a problem with the gameport connector on my Amiga 500. When I
want to connect both the mouse and a trackball, or the mouse and an analog
joystick, neither the mouse nor the tackball/analog joystick operate: the
mouse pointer doesn't move, I get no input from the other device. If I
disconnect the mouse, my trackball works fine (at least, thought so...).
There are no problems with digital joysticks or the trackball on other
Amigas. So, if the controller needs power, things go wrong.

I once blew up one of my CIA's: I connected my father's mega-A3-lotsanoise
matrix printer to my Amiga; at startup, the diskdrive went berserk. The
cable manufacturer probably thought that NC meant the same as GND, but I'm
not sure of it. Anyway, I replaced the CIA with another and I've never had
any problem anymore... except for this.

Now, I'd like to know
1) Does it have something to do with the CIA's ?
2) Or with another custom chip (eeks ! no !)
3) How can I solve it ?

Please, send your replies, if you decide to mail insted of posting, to ME.
The last time I had mail posted (I can only read mail, posting no go) all
replies came to the wrong person. So, send your mail to one of the addresses
with the large 'Peter' in front of it.

,--,                    peter@amice1.stack.urc.tue.nl | The answer to
|  |     |              peter@amice2.stack.urc.tue.nl | all questions:
+--',--, +-  ,--, +-->  s90406225@hsepm1.hse.nl       | Read The F****ng
|   +--' |   +--' |                                   | ROM Kernel Refe-
`   `--' `-' `--' `    Only Amiga makes it possible ! | rence Manual

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

Yes! Another great amiga-posting thanks to Angelo Wentzler!!

-- 
=============================================================================
Email: Internet: rcstack@urc.tue.nl              Bitnet: rcstack1@heitue5
Computer Association STACK, Computing Centre RC 1.82,
Eindhoven University of Technology, POBox 513, 5600 MB Eindhoven, Holland.