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Amstrad CPC screen compressor #31

@fmafma

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@fmafma

Hi!

I'm using zx0 to compress screens for a reboot of my Amstrad adventure game, Fugitif.
I recently made test by re-organizing the screen memory so 2 adjacent lines on screen are continuous in memory, instead of the every 8 lines.
I got a 6% gain in data compressed!
The only problem is it needs to move all lines to reconstruct the image. Which is time consuming.
So, I'm wondering if a special version of zx0 could be build to do that?
If so, it could be nice to be able to set the width of the screen area we need to compress/decompress. This would allow to decompress portions of screen.
Thanks!

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