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Posted by planetjay on 6, 2001 at 2:48 PM:

In Reply to: Howard Casto and Johnny the MAME'r read this! posted by Reg on 6, 2001 at 7:25 AM:

That way you'll have real MAME programmers seeing your discussion/ideas.

: Hi,

: your inputs are appreciated...

: I have found the Patent of the Act Labs Light Gun and the Nintendo Zapper...They quite well explain how each gun works...

: Both of these guns need a blank frame and a white target...

: The Act Labs works only on a monitor and they use the synchronization signal of the monitor to increase the precision of the gun...

: Please do not forgot Mame emulate hardware...

: I mean by this we can know at which resolution a game is running, the beginning of a frame the end of a frame, we can even synchronize the frames, ...

: Look in Mame32 the advanced options "Synch to monitor refresh", "Wait for Vertical synch", "Draw every frames"

: I have checked the game Clay Pigeon Version 2.0 "claypign"

: you can see a black frame with the white target when you use the Ctrl button to shoot the clay...

: so I think the implementation can be done with a fair precision.

: We can solder the gun trigger swith on the Ctrl key of a keyboard controller and send the Gun output (Zapper is the blue wire ) in the Game port.

: We just need to figure out in Mame how to make this gun work ...

: I think we are half way...

: Reg




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