>
> At 10:22 10.04.98 -0400, you wrote:
>
> >How about using the Booster-Grip controller? It has two more buttons
> >hooked to the paddle inputs. The next release of Stella will support
> >this controller and PCAE already supports it I think. I made some
> >tech notes describing how it works if anyone is interested...
>
> It would be nice, if you could send them to the list, but I think
> for this game the Booster-Grip would be inapropriate, since not
> that many people have two of them.
Maybe it could be a runtime option and the user could choose which
controller to use. There maybe a joystick out there that can be
easily converted into a Booster-Grip compatiable controller.
The Booster-Grip information is included below. You'll probably need
a little more information to actually write a program to use it
but it's a start :-)
The following information describes how the CBS Booster-Grip controller
works. This information was collected by examining the code for Omega Race.
SWCHA bits are as follows:
D7 right P0 (0 means switch is pressed)
D6 left P0
D5 down P0
D4 up P0
D3 right P1
D2 left P1
D1 down P1
D0 up P1
(P0 = left, P1 = right)
INPT4:
D7 fire P0 (0 means fire button is pressed)
D6-D0 unused
INPT5:
D7 fire P1 (0 means fire button is pressed)
D6-D0 unused
INPT0:
D7 trigger P0 (1 means trigger is pressed on Booster-Grip)
D6-D0 unused
INPT1:
D7 booster P0 (1 means booster is pressed on Booster-Grip)
D6-D0 unused
INPT2:
D7 trigger P1 (1 means trigger is pressed on Booster-Grip)
D6-D0 unused
INPT3:
D7 booster P1 (1 means booster is pressed on Booster-Grip)
D6-D0 unused
So it seems that the Booster-Grip has a total of three "fire" buttons.
It's also the case that all of the standard Atari Joystick connections
are the same when using the Booster-Grip. The main thing to notice
is that the Booster-Grip buttons are active when D7=1 and the normal
Atari Joystick fire button is active when D7=0 :-)
--------------------------------------------------------------------------
Bradford W. Mott (bwmott@xxxxxxx) Computer Science Department
http://www4.ncsu.edu/~bwmott/www North Carolina State University
--------------------------------------------------------------------------
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