Re: Tempest foldover on right side

Well the rom set is V2, good point on the boundary limit. I don't recall off
hand, but when I get home tonight, I'll tape off the bounding box on the
screen, and see. Wouldn't think it would be the Deflection trans, as I
replaced all the Transistors with new when I re-capped, and did the LV
upgrades. Don't think I have any V3 roms handy, but I'll check and see if
that makes a difference.

Thanks for the input, gives me a few things to check.

Kevin

On Wed, Dec 16, 2009 at 2:43 AM, Andrew Welburn <andy@andysarcade.net>wrote:

> If its bothersome, you could try replacing the relevant chassis
> deflection transistor, i've seen that before. Tempest unfortunately will
> force the monitor to display vectors way, way outside the visibile screen
> area, later romsets IIRR have a fix for this. Even if your monitor can
> produce a full image, certain parts of the game will overdrive the
> deflection such that the transistors will partially break-down, causing
> other areas of the screen to show foldover like this.
>
> Its not clear if your boundary is inside or outside the real screen limit
> anyway without a photo. you should set the test mode pattern up to fill your
> screen then watch it in game, is the foldover inside this box?
>
> I'd replace the relevant chassis transistor first with a new one then
> observe... Changing the romset to a later revision might also help, but this
> is much more laborious, and is ignoring a weakness in your monitor anyway.
>
> Andrew Welburn
> www.andys-arcade.com
>
> ----- Original Message -----
> *From:* Kevin Moore <talon.k@gmail.com>
> *To:* vectorlist@vectorlist.org
> *Sent:* Tuesday, December 15, 2009 6:53 PM
> *Subject:* VECTOR: Tempest foldover on right side
>
> I've noticed that Tempest has a slight foldover when the player finishes a
> level, and the tube starts coming up. The left side the tube lines go
> infinity for lack of a better word, but the right side seems to fold over
> like hitting a wall, and it creates a straight line. Typically I just adjust
> the picture so that the monitor shroud covers this. Is this normal?
>
> Thanks,
>
> Kevin
>
>

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Received on Wed Dec 16 08:18:23 2009