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PostPosted: Wed Jan 25, 2017 8:42 pm 
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Joined: Sun Apr 13, 2008 11:12 am
Posts: 6277
Location: Seattle
Zepper wrote:
RAW... OK... but how to parse the file, as RGB or any other format?
Implement a PAL or NTSC decoder. Raw values are just direct immediate voltages, higher = brighter.


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PostPosted: Wed Jan 25, 2017 11:21 pm 
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tepples wrote:
In case it isn't obvious to others reading this, the reason you don't get Hanover bars from a broadcast signal is the 90 degree swing of broadcast TV's color burst compared to the nonstandard 120 degree swing from the 2C07.
You're confusing the phase of the color subcarrier relative to the horizontal sync signal with the phase of the color subcarrier relative to itself. The 2C07 does not switch the phase of the color subcarrier relative to itself by 120 degrees from scanline to scanline, and so the 2C07's non-standard scanline duration has nothing to do with the presence or absence of Hanover bars.


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PostPosted: Wed Feb 08, 2017 1:21 pm 
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Joined: Sun Apr 13, 2008 11:12 am
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Location: Seattle
... You know, I actually saw evidence of this phase error when I made my bitbanged RS170 test. The colorburst was always a little greener than the corresponding field of hue 8, and it changed depending on the nominal brightness of that field of hue 8.

And I didn't know what I was looking at and told myself it was experimental error at the time. Oops!


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PostPosted: Thu Apr 13, 2017 3:39 pm 
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Location: New York, NY
It looks like FireBrandX updated his palettes yet again. It sounds like "PVM Style D93 (FBX)" would be probably be the most applicable one.


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