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Forums > C64 Coding > Generate teletext signal with C64?
2011-03-11 16:18
goto80

Registered: Jan 2002
Posts: 138
Generate teletext signal with C64?

Would it be possible to generate a teletext signal alongside the audio and video in the RF-output of the C64?
 
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2011-03-17 21:11
Oswald

Registered: Apr 2002
Posts: 5095
well if you think a c128 could do it with open borders then an amiga could do it twice as easily.
2011-03-17 22:12
Ninja

Registered: Jan 2002
Posts: 411
Oswald: Hic Rhodos, hic salta!
2011-03-18 07:04
lemming

Registered: Oct 2009
Posts: 44
Quoting Ninja
I don't know much about gfx-capabilities of the Amiga. I'd suspect if it could easily do it, it would have been done already.


At least Dweezil/Complex did it on Amiga back in 1999 but the production it was supposed to be in was never released.
2011-03-18 09:12
linde

Registered: Jul 2006
Posts: 47
If the Amiga can do it, then inserting it into another video signal should just be a matter of syncing and switching the amiga video signal in at the right lines. Doable with some genlock hardware?
2011-04-07 11:09
goto80

Registered: Jan 2002
Posts: 138
@Lemming: Apparently he never got it to work as well as he wanted to. I asked him. You know of any other teletext-hackers? :)
2011-04-07 19:46
Count Zero

Registered: Jan 2003
Posts: 1940
There was a genlock interface for the c64 allowing you to add text (and some effects?) to a video(signal).
The company which created it was Scanntronik from germany I think.

Maybe something alike will work similar for you?
2011-04-08 02:47
Ninja

Registered: Jan 2002
Posts: 411
Yeah, the genlock could put nice PETSCII on top of the video. I got one but never tried it...
2011-04-08 07:37
Oswald

Registered: Apr 2002
Posts: 5095
in the small town I grew up the local town tv used c64's for years for subtitling with a genloc. they were also used to broadcast "no signal" pictures, and display "tv news" texts.
2011-04-08 17:18
Count Zero

Registered: Jan 2003
Posts: 1940
Ninja: You could put anything, no? Afair there is a definition or so as for which c64 color needs to be background to be transparent for the video signal. Anything else should get displayed so not just petscii.
2011-04-08 18:49
Oswald

Registered: Apr 2002
Posts: 5095
on the genloc I saw you could put "anything" :)
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