10 PRINT
10 PRINT CHR$(205.5+RND(1)); : GOTO 10
After reading the book 10 PRINT by Nick Montfort I had to test it on my old C64.
Example of the code in its simplest form
10 PRINT CHR$(205.5+RND(1)); : GOTO 10 RUN
You can download the book from 10print.org
Teodor Bjerrang