Hello, How can i get rid of the lines? I just wanna display "PONG" text. Thanks.
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1. Too few information given. 2. Wild guess: The Image is stored in blocks. The addressing of the image memory lags behind or the data is behind and so for some clocks old data is being put on the lines. But it is strange that the lines are on both sides of the caracters. Something went horrible wrong. Did you do simulation? What if you just output a white rectangle, is that ok? How is the signal path inside the FPGA, where is the image stored, how do you output it and what external electronics is involved? Is it classic VGA or do you just mean the resolution and it is HDMI/DP/...? Is the Image supposed to look green? Where is the original image? Maybe the lines are an artistic sideeffect?
ElectroCataru wrote: > How can i get rid of the lines? First is to find out: where do they come from? > How can i get rid of the lines? Are they static? Or do they change? > I just wanna display "PONG" text. On what platform with what hardware? > I just wanna display "PONG" text. Where does this "PONG" text come from? Do you have 5 bitmaps of those 5 characters somewhere in memory?
Are they static? Or do they change? are static On what platform with what hardware? using a basys 3 and a 1024x768 monitor Do you have 5 bitmaps of those 5 characters somewhere in memory? i use this site https://www.dcode.fr/binary-image to convert a photo (jpg) in binary.
FPGA NOTFALLSEELSORGE wrote: > 1. Too few information given. > > 2. Wild guess: > > The Image is stored in blocks. The addressing of the image memory lags > behind or the data is behind and so for some clocks old data is being > put on the lines. > But it is strange that the lines are on both sides of the caracters. > Something went horrible wrong. > > Did you do simulation? What if you just output a white rectangle, is > that ok? > How is the signal path inside the FPGA, where is the image stored, how > do you output it and what external electronics is involved? Is it > classic VGA or do you just mean the resolution and it is HDMI/DP/...? > classic VGA, with bitmap > Is the Image supposed to look green? Where is the original image? Maybe > the lines are an artistic sideeffect? yes, it's supposed to look green.
ElectroCataru wrote: >> Are they static? Or do they change? > are static You have the traditional "off-by-one" problem due to latency. > i use this site https://www.dcode.fr/binary-image to convert a photo > (jpg) in binary. Try out some test patterns: half black/half white with top/bottom and left/right. Try vertical/horizontal lines with one pixel width. Or any other repeating pattern like squares or hatches. Try to find out a behaviour and dig this out in simulation.
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