> Hello guys, > > I wonder, What is the cause of this deterioration in the image? > > I ask this because: this distortion does not exist, the original arcade game.
The only thing I see wrong with that image is someone drew a big red shape over it.
I'm guessing you mean the rough aliasing on the edge of the plane, in which case it's not a defect. You don't see it as much on the real machine because they used a very blurry low-res monitor. MAME and your sharp high-resolution PC monitor reproduce the graphics exactly as they were drawn, warts and all.
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