Re: Cinematronics monitor: no horizontal intensity?

I had a similar problem a while ago with an armor attack. It wouldn't
display the sprites. I thought it was a board problem, but it turned
out to be the brightness pot on the monitor doing something funny with
the different intensities. When I swapped in a Star Hawk board I got
similar symptoms to yours.

There was a passage in the monitor FAQ that twigged me to it.

Maybe it's the pot is not responding properly to the signal seeing as
the problem varies with the amount of vertical in the sprite.

Cheers
MacMan

On Friday, March 28, 2003, at 06:17 PM, Gregg Woodcock wrote:

> I have a monitor in a Space Wars with a strange problem I can't wrap my
> brain around. I have perfect +/- Horizontal *deflection* as well as
> perfect
> +/- Vertical deflection. All vectors are the proper size, position and
> shape. The problem is that the horizontal intensities are 0. Now I
> know
> there's no horizontal intensity; there's only a merged/vector
> intensity.
> But that fact is EXACTLY what is freaking me out! I know the problem
> is in
> the monitor as I have another that works fine. If I can just figure
> out HOW
> such a symptom might be generated, I'm sure I'll narrow in on it
> immediately. The problem is primarily lack of experience; I've only
> ever
> had *deflection* problems (never even HV on these guys). I just can't
> understand how I'd get an intensity issue only for horizontal when the
> intensity is a shared signal. For example, if I coin up 4:30, the
> display
> *should* look like this:
>
> | | --| |--|
> |--| : --| | |
> | --| |--|
>
> but instead looks like this where all horizontal lines look like dots
> on the
> endpoints (maybe just 1 end):
>
> | | . | | |
> | | : . | | |
> | . | | |
>
> Additionally, it appears that whenever the vector has more VERTICAL
> than
> horizontal it has the proper intensity (as I recall Space War/s only
> used
> on/off, not high/low/off) but whenever the verctor has more HORIZONTAL
> than
> verticale, the intensity is 0. Unfortunately all chips are socketed.
> Any
> ideas?
>
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Received on Fri Mar 28 00:04:50 2003