On Thu, 22 Nov 2001, Christopher Phillips wrote: > hmm.. except PAL of course will try to fix this, as it looks like > drift, which will be happening in opposite directions on alternate > scan lines. IIRC, and of course you will probably get no colour at > all anyway. I have the experience that PAL decoders (i.e. colour TV sets and monitors) are very picky about the colour subcarrier frequency. Turning the frequency adjustment knob by just a fraction of a degree can make the colours totally disappear. I don't have so much experience in NTSC. My NTSC VIC-20 board has a very flaky clock circuit; the picture waves horizontally, and the computer crashes often when it is cold. Therefore I seldom get colours from that board even via a real NTSC decoder. > In case you hadn't guessed, IANAVideoEngineer :) Me neither. Another thing you can try for a rainbow effect is playing with a magnet. On a black-and-white display, the effect is different: there the magnet just "stretches" the picture but obviously does not distort colours. But beware, the magnet can cause permanent damage. I never tried it with a colour monitor. Marko Message was sent through the cbm-hackers mailing list
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