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how to make system thing it is using a tracball?


bohoki

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Games set consol_mask to 0x0f when they want to check to see if the trackball is is connected. If the trackball is connected the value returned is 122, if the joystick is connected center ( 228 ) is returned. Although in emulation I found the programs seemed to like 114 better. Which is almost, but not quit the halfway value listed in the document provided by Cpu_wiz. Now what the hardware is doing physically at that time I dunno...

 

Interesting read that document is. It kinda explains some of the behavior that I noticed while troubleshooting all this stuff when working with atarixlbox. I was actually thinking of revamping the analog controls. Bbox analog sticks do not reach their "maximum" X/Y range on up/left diagonals so it made it hard to reach the corners in games like "missile command", etc.

Edited by Shannon
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