|Jan 12, 2008, 05:03 AM|
picoOSD DIY PIC12F683 based OSD in C
Hi, somebody did excellent job creating an example of source code for OSD that we can understand (in C language):
|Jan 12, 2008, 12:01 PM|
I continue to be amazed by time mountains
The OSD however looks to me slightly useless. Perhaps you could mod the code to have the engine run on something with a higher clock speed so you dont end up with all of 3 lines of text, 8 columns of data or so available.
|Jan 30, 2008, 10:16 PM|
very interesting project, could you explain a bit more in detail how the code works? (I know C programming)
As i understood you count the lines from the sync pulses, but how do you know when on the line to draw the line high for white or low for black?
shouldent the max voltage in PAL be 1V?
How many "pixels" are there in one line?
You have a 2D array (bitmap)for keeping track of where to put a pixel and functions for updating the array. The array is written to the screen at every new frame...right?
how does the WRITECHAR() function work?
thanks for sharing this great project!
|Jan 31, 2008, 08:47 AM|
However for understanding the OSD internals, it's better than anything in assembler.
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