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How do you set arcade accurate analog settings ??
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Carsten Carlos:

--- Quote ---I have a question on Centipede, are you saying that one 360 degree movement of the track ball only moves the shooter 2 1/2 mushroom lengths??
--- End quote ---
I guess telengard meant to turn the visible area of the ball from one side to the other! (Placing your finger on the left edge of the ball and turn to the right edge)
telengard:

--- Quote from: Carsten Carlos on September 15, 2004, 04:25:10 am ---
--- Quote ---I have a question on Centipede, are you saying that one 360 degree movement of the track ball only moves the shooter 2 1/2 mushroom lengths??
--- End quote ---
I guess telengard meant to turn the visible area of the ball from one side to the other! (Placing your finger on the left edge of the ball and turn to the right edge)

--- End quote ---

Exactly.  For me to test a full revolution I would have had to mark the trackball in some way to know it's gone around and that might have been frowned upon.   :)

I'm finding that the Analog Sensitivity isn't enough to duplicate the feel of some games.  As I mentioned I am able to get the trackball movement amount to match in Crystal Castles, but there is something missing.  I've been looking at the schematics and MAME code to see if there is something missing.  All I've seen so far is a chip called LETA.  It seems to handle the trackball input.  My guess is that it does things a little differently than something like the optipac.  I could be totally wrong though.  One thing is for sure, the trackball movement is not easily duplicated for that game.
Matt Berry:
Has anybody looked into this any further. I'm trying to get my settings close with centipede. I'm using a happ 3" trackball interfaced to a opti pac. Any help would be greatly appreciated.
telengard:

--- Quote from: Matt Berry on November 19, 2004, 09:45:49 am ---Has anybody looked into this any further. I'm trying to get my settings close with centipede. I'm using a happ 3" trackball interfaced to a opti pac. Any help would be greatly appreciated.

--- End quote ---

Hi Matt,

I wish I could say yes.  The closest I've come is the measurements I took that you can see in this thread.  I also have a Happs 3" and cannot seem to get it exact.  Keep us posted if you find anything.

~telengard
Pixelhugger:
What a fantastic thread. Thanks a million for those Tempest measurements Telengard and Alan. I was almost at the point of knocking the door of some stangers house after seeing an old Tempest machine in his open garage. THANK YOU THANK YOU!!! I been waiting for this info!  :)
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