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Cake day: July 9th, 2023

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  • Treczoks@lemmy.worldtoaww@lemmy.worldPicnic visitors
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    7 days ago

    Reminds me of a visit to a British castle. Parking was inside the grounds, and there were two picnic areas. One close to the parking lot, one rather far away. Our (local) friends decided on a picnic spot at the far end, and I went all the way to the car to get the stuff.

    On my way to the car I saw a single family setting up their lunch on the picnic place next to the parking lot and grumbled why we could not have used this spot instead.

    On my way back, I learned why. The family with the little kids were sitting on the blanket, besieged by the duck Mafia from the nearby pond who demanded their share.








  • It basically tells you that you can basically tone the “colourness” (i.e. the brightness of the colours) up and down, which was a normal control (like brightness and contrast) back then. This is not about being able to make a red playing field green by some setting on the TV. You just had some potentiometers to play with the pre-amplification of the luminance and colour signals.

    What could be in the instructions would an explanation of the games telling you that e.g. the playing field is green and the ball is red or somesuch, then they actually did a (rare) “colour implementation” of the circuit.

    If you are interested, there is a number of interesting documentations on this pong chip on the net.


  • I wonder about the “Colour”. Did they actually use the different video outputs of the AY-3-8500 chip for controlling different colour signals instead just joining them as a luminance signal?

    For those too young to know: The AY-3-8500 (or AY-3-8500-1 fo NTSC) chip is at the heart of almost all of those pong-type consoles. It has a number of different (but synchronized) video outputs for left player, right player, ball, numbers, and playing field, and most consoles just or’ed them together into luminance (Y) to make a simple B&W image. You could route some signals to the R-Y and/or the B-Y signal to give them some basic color, e.g. if you sent the “ball” signal both to the luminance and the red (R-Y) channel, you would get a red ball. All this needs are a handful of simple logic gates.