> Did't one of the cinematronic games that was produced as a b&w game
> end up
> being a color game and worked this way? (I think it was war of the
> worlds)
>
Dunno about WoW (Zonn?), but as I recall Boxing Bugs just loaded the
colors into a latch.
> Clay, are you going to make this kit
> 1) cheaper, more accurate, harder to install, Where you attach it to
> the
> input side of the intensity DAC.
> or
> 2) more expensive, less accurate, easy to install, Where you have an
> ADC
> and convert the analog intensity signal back to binary, but can attach
> it
> somewhere downstream from the game PCB.
>
The one I did was a little board with (I'm going to guess) about 7-8
wires. (Four data lines, a qualifier for the beam valid, power, ground,
maybe something else...) The monitor-ready color outputs came out on a
header.
I think I tried using the intensity signal from the analog output to add
some range control on my color outputs, but I don't think it worked very
well (seemed like the color phosphors dynamic range was different making
things hard to see...)
> You could also save a few bucks (cents) by just having single color
> shots.
>
True. If I go back and clean it up I'll probably just use a MACH111.
It's way overkill, but it's only $1 more than a 22V10, and I can do the
"flashing" stuff all internally, and probably add a digital brightness
control too... (And I'll be using a lot of them for the Pacman 284/285
boards anyway...)
-Clay
Received on Mon Aug 3 12:27:21 1998
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