== Screen wobbling and Fine horizontal hardware scroll ==
Beware, these effects rely on invalid HSYNC video signals. They are badly supported on modern displays.
When R2 increases by 1, the screen is shifted to the left by 16 mode2 pixels.
The shift is not instantaneous but follows a logarithmic attenuation over several raster lines.
Beware, these effects rely on invalid HSYNC video signals. They are badly supported on modern displays.
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