Re:A bootable CD image with a retro game in a single tweet
by garaetjjte on Tuesday July 31, 2018 @04:36PM
(#17656850)
Not CD images, but there is DOS C compiler generating executables with only printable characters (and also no self-modifying code that could contain non-printable characters)
http://www.cs.cmu.edu/~tom7/abc/paper.txt (view in monospace font, 160 character lines)