Re[x]: Weirdly Deformed STAR WARS

> solarfox@texas.net wrote:
>
> > I have a STAR WARS in the lab which is exhibiting some strange picture
> >deformations. Now, I know the picture is going to be a bit "off" due to
> >the fact that this game has a Wells-Gardner 19K6100 in it, rather than an
> >Ampliphone, but as you can see from the following pictures, I think this
> >game's problems go a bit beyond that. :)
> >
> >Taken during the diamond-pattern self-test:
> >
> >http://solarfox.home.texas.net/ArcadePix/StarWars/Diamonds.jpg
> >
> >During gameplay, the TIE fighters and fireballs start out deformed in the
> >distance... the best description I can think of is that they've been
> >vertically squashed. They straighten out as they get closer/larger.
> >
> >http://solarfox.home.texas.net/ArcadePix/StarWars/DeformedTIEfighter.jpg
> >
> >During the trench sequence, the trench walls are straight, and the catwalks
> >look right, but the laser turrets on the sides are deformed. The ones on
> >the left seem to turn themselves inside-out as they get closer.
> >
> >http://solarfox.home.texas.net/ArcadePix/StarWars/Trench.jpg
> >
> >When the Death Star explodes, the start and endpoints of the circles don't
> >line up. (This is also a problem with the Death Star itself.)
> >
> >http://solarfox.home.texas.net/ArcadePix/StarWars/DeathStar.jpg
> >http://solarfox.home.texas.net/ArcadePix/StarWars/DeathStarExplosion.jpg
> >
> >Anyone seen anything like this before, or have any idea what the problem
> >is? It does this on two different monitors, so I'm pretty sure the problem
> >isn't in the monitor itself -- unless, of course, this _is_ what happens
> >when you use the Wells-Gardner instead of the Ampliphone...?
> >
> >

vertical scalling circuit, check for counters (74ls161's?)

---------------------------------------------------------------------------
** To UNSUBSCRIBE from vectorlist, send a message with "UNSUBSCRIBE" in the
** message body to vectorlist-request@vectorlist.org. Please direct other
** questions, comments, or problems to chris@westnet.com .
Received on Mon Oct 27 15:02:17 2003