Compiling a Fork

[saddleau]

I would like to make a fork of the code the author has done for the Genius Pro and Sidewinder II printers. I would like to learn how the code works to try things on my printer but the source code is not available on the GitHub. Is the source code available for downloading? Starting with the original Marlin code is an option, but I would like to avoid starting from scratch with the current Marlin.
The fact there is separate TFT code that must be loaded, indicates to me that the TFT runs partially like a display terminal with preset base screens stored in the TFT itself to either speed up drawing times or to minimise and simplify what is stored in the main processor.