"From scratch" made me expect something like "From NAND to Tetris". http://www.nand2tetris.org/ http://www.nand2tetris.org/ Or Space Invaders not on modern ha

"From scratch" made me expect something like "From NAND to Tetris". http://www.nand2tetris.org/ http://www.nand2tetris.org/ Or Space Invaders not on modern hardware, or at least on an emulated 8-bit system.