I wonder if anyone who has access to a Gradius III arcade PCB can answer the following questions:
(1) When the monitor position and size controls are correctly set (so that the edges of the crosshatch pattern displayed during POST are just visible on the edges of the screen), do some of the attract mode splash screens show corrupt graphics at the right edge of the screen? Something like a thin line of bright pink pixels?
(2) Does the entire title screen shift left 2 pixels when the logo and text appear on it?
I'm trying to determine whether these are emulation bugs in MAME or sloppiness in the programming of the original game...