@oe1cxw @folknology Any ideas on the good #ice40 compression method with compact decompression library for ARM host?
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That shows (predictably) the limitations of RLE quite clearly, maybe other methods can improve with higher gate counts..
J1a is pretty much as tight as it gets (hx1k). Still 33% space savings. ("gzip -9" achieves 42% space savings.)pic.twitter.com/7rTHUssgT7
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I think some form of RLE is a good start. 33% vs 42% gzip -9 is impressive. What 7Z /RAR gives you on J1a bitstream?
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you can try it yourself. I checked in the example .bin files: http://svn.clifford.at/handicraft/2016/ice40compr/ …
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Agree, 33% is a good start. Could you elaborate more on the algorithm your are using?
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I am storing the distances between ones. I'm using a simple Huffman code to use fewer bits for small distances.
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