brucland
commented
2 years ago NTSC hue is encoded as phase modulation of a 3.59 MHZ carrier added to the gray scale waveform. So, start a PIO state machine running at 4x the carrier frequency, and use it to simulate a ring counter with two high bits.Use 4 and-gates to mix one or more of the four phases depending on color data from the data state machine.
========================== Bruce Land Visiting Sr.Lecturer, ECE http://people.ece.cornell.edu/land/
On Oct 30, 2021, at 6:52 AM, ganadevprajapathy @.***> wrote:
Can you guide how to achieve color? https://github.com/Panda381/PicoVGA, the project is using VGA but the output has generated color. I probably need some spoon feeding !
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Can you guide how to achieve color? https://github.com/Panda381/PicoVGA, the project is using VGA but the output has generated color. I probably need some spoon feeding !