17 Sep
2006
17 Sep
'06
7:28 a.m.
From: bpope at wordstock.com (Bryan Pope)
<snip>
But I would like to use the same trackball or spinner
directly hooked
up to my Commodore 64... (and then other times to my PC to play
Centipede or Arkanoid)
Cheers,
Bryan
I don't know the C64, but if it's mouse uses a pair of slotted wheels, each
with two sets of transmitter-receiver photo diodes, you can modify the Happ
trackball. Just run the wires on the trackball side to a DB25 plug, and put
a DB25 socket on the C64 mouse circuit board side. Do the same for a PC
mouse. This way, you can use the circuit board from a PC mouse with a PC and
from a C64 with that.
BTW, I forgot to mention that I desoldered the left and right button
switches from the mouse board and wired-in arcade pushbuttons, also from
Happ Controls.
If you do not use common ground wires, you will need 20 pins on the DB25 for
the full setup (16 wires for the 8 photo diodes and 4 wires for the two
switches).
Bob