I've been studying the NTSC_video wiki page heavily the past view days and I have some formatting suggestions that might help future readers.
I also have some questions that I'll try to keep in context of formatting versus questions about the topic.
I'm more than willing to help update this page if you agree with the suggestions and would grant access.
An overall suggestion is to label tables & images and reference them accordingly. (My engineering background coming out )
In the opening paragraph there is this sentence,
Would it be helpful to say the reference the master clock specifically add the period (length in time)?"NTSC Master clock is 21.47727273 MHz and each PPU pixel lasts four clocks"
The last sentence in the opening paragraph talks about palette values, but it isn't used until the Brightness Levels section."NTSC Master clock is 21.47727273 MHz and each PPU pixel lasts four Master clock cycles (186.24 nano seconds)"
Could this be moved to the beginning of the Brightness Levels section? And add a link to the PPU_palettes page?
In the Color Phases section:"$xy" refers to a palette color in the range $00 to $3F (see PPU palettes)
What table is this referring to?On NTSC, color $xY uses the wave shown in row Y from the table.
If it is the table right above it, which is row Y? (Here is an example of labeling tables and referencing them)
Still in the Color Phases section:
Which table and where is pure shade -U listed?NTSC color burst (pure shade -U) uses color phase 8 (with voltages listed above)
In the Color Artifacts section:
Is this 12 master clock cycles or 12 PPU clock cycles?Thoughtit takes 12 clocks of the generator to complete a color cycle, an NTSC pixel is only 8 clocks wide
Delete the "t" in Thought
Also, I'm not clear what the "generator" is, but that is probably due to my lack of knowledge up to this point.
In the Color Tint Bits section:
Which diagram above? There is a diagram directly below this paragraph, but since it said above, I'm not clear.There are three color modulation channels controlled by the top three bits of $2001. Each channel uses one of the color square waves (see above diagram)
I don't know what $2001 is, but that is probably another thing that is due to my inexperience.
Reference section has dead links:
Tutorial 1184: Understanding Analog Video Signals
https://www.maximintegrated.com/en/app- ... vp/id/1184
Analog Video 101
http://www.ni.com/white-paper/4750/en/