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EVMDM365 demo with video lines 23, 24 and 25 filled on encodedecode demo - I can only put data on line 26?

Expert 2315 points

The output of my encodedecode demo have the top visible lines on the screen filled (half line 23 and lines 24 and 25 on field 1 and lines 336 and 337 on field 2 as seen on my waveform monitor) and the first line I can write to is line 26 which is the next line in memeory offset in my video buffer.  Per definition for my application I need to put out data on line 24 which is in the visible region of PAL video.  How do I find where this line comes from and where is the offset determined in the memory map as I get the pointer for the start of the buffer from Buffer_getUserPointer and assumes this is the start of the map and pointing to the first visible line?  I also assume this is a software issue for posing it here or could it be a hardware issue of the dm365?

Thanks, Jinh T

  • Attached is a bitmap of one frame: the white lines right to the top are the ones I need to know where they are coming from:

     

    The "barcode" on the left edge is data I put in there and that starts on line 26 as indicated by the video Waveform Monitor.

    Thanks, Jinh T.