> Road Blaster's history.dat says the following:
> This large sit-down cockpit model has a plastic lens over the monitor which enlarges
> the screen to make it seem like a 25-inch CRT, in a fashion similar to that used in
> very early TV sets during the 1950s.
> I took in-game snapshots of the upright parent and the cockpit clone and compared
> them and didn't see any difference in size. So apparently this enlargement wasn't
> emulated for the cockpit clone? Probably because this enlargement effect had nothing
> to do with the actual game/ROM/PCB. Well, can't Mr. Do! or someone simulate this
> enlargement effect with an artwork file? Has this enlargement effect ever been
> implemented for any other game in MAME?
It's been a very long time since I played the one Jeff (and yaggy?) brought from Videotopia to the old local videogame convention. 
I seem to remember setting the high score, but they may have been cleared prior to setup.
Anyways, I think this would be better off for HLSL/GLSL to simulate, you're talking about optical magnification/warping effects. The artwork system doesn't really have anything to do with this.
There's a decent amount of games which used various types of lenses to magnify. Lots of physical effects remain un-simulated by MAME. It's debatable whether this should be a project goal. You can only go so far with simulation of this kind and remain "accurate".
- Stiletto
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