Re: Re: Omega Race - picture noise?

From: Travis Shire <boardjunkie_at_techie.com>
Date: Thu Nov 27 2008 - 19:44:13 EST

On color games that used the WG monitor if the shield cage was removed from the HV unit the noise coming from that would cause the lines to have what looks like AC riding on them. Is the cage present on your monitor?

> Greetings vector friends,
>
> Since there's been so much chatter on this list lately about Omega
> Race, I figured I'd chime in with my own questions, as I'm working
> on restoring an Omega Race cocktail right now.
>
> http://www.consortiumofgenius.com/arcade/omegarace.jpg
>
> This is going to be beautiful when it's finished. While I'm at it
> I'm trying to get the electronics more solid too. I recapped the
> monitor today and while the linearity is better (and a strange
> spotkiller glitch also went away) I was dismayed that the picture
> still had a somewhat 'grainey' appearance compared to other B&W
> vector games. It's hard to describe but it's just not as smooth
> lines as my Cinematronics games, or a typical Atari Asteroids, etc.
> It's a kind of very subtle low level noise visible on all lines.
>
> Is this normal for this game?
>
> Is this just a normal byproduct of unshielded X-Y lines going to the monitor?
>
> If not, what can I check?
>
> Also, I have noticed random minor vector drawing errors every 10-20
> seconds or so during gameplay. I'd like to confirm whether this
> too is normal (I believe I observed similar behavior on my
> VectorMAME cabinet emulating Omega Race, so I suppose it could be
> in the code...)
>
> Cheers & happy turkey day!
>
> -Lewis
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>

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Received on Thu Nov 27 19:44:18 2008

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