MAMEWorld Forums - Programming - Re: Access to game sources

>In this case it is a visual effect. I probably need to get into the graphics of the game.
>It is Pinball Action and the error is when the ball passes "over" or "under" the game barriers or objects... going through them...

Maybe what Haze posted could be correct. There also may be some actual bugs that does occur with actual pcb hardware of the game. You would have to do a search such as find a video clip on Youtube or elsewhere that shows game play from actual pcb that shows whether the bug occurs or not or you will need to find a pcb owner of the game to verify if actual hardware does same thing.

There are 5 different sets of Pinball Action supported as source file indicates: src/mame/drivers/pbaction.cpp

There could be a revised/revision version that did fix the bug description. But if the same bug occurs with all supported sets, then next guess could be emulation error.

Sometimes the service manuals that came with the arcade cab might include pcb game logic schematics for helping trace hardware logic. I don't know if Tehkan made that available for their games like other companies such as Atari did.