Thanks everyone, there's some cool stuff really! 😁
Btw, I vaguely remember something about old pong consoles.
I thing it's from the 70s, too. I *think* it was related to Radio Shack, as well.
From what I remember,-very vaguely-, is, that early pong consoles generated a colour image on US American TVs (NTSC).
I think it was completely analog, RF and was related to the background picture.
The analog circuitry did generate some sort of rainbow gradient on TV.
The actual picture was very trippy/psychodelic, I believe.
Edit: I *think* I've found something.
https://www.eevblog.com/forum/projects/analog … ari-super-pong/
Here are some pictures I've found online, too.
Not sure, but could that have been done by modulating an RF signal (ext. modulator installed) through clever use of
I mean, by playing with the sync and blanking signals etc?
Dunno, it's just a wild guess.
I just vaguely remember a hack of the ZX80/ZX81 (?), in which sound was produced by manipulating the internal RF generator.
There was no provision for any sound inside that modulator, though. It was all software.
The sound was generated by causing a "burst", overmodulation or causing adjacent channel interference, not sure.
If properly timed (or rather, wrongly), if I understand correctly,
the video carrier was interfering with the audio carrier space.
Thus, a noise could be heard on a TV connected to it. Without extra hardware!
"Time, it seems, doesn't flow. For some it's fast, for some it's slow.
In what to one race is no time at all, another race can rise and fall..." - The Minstrel
//My video channel//