The Pornodore 69 is a computer and disk operating system designed by Lowe Corp between 1980-1983. Version 1.113 was designed in 1983.
A rare copy of Leisure Suit Larry 4: The Missing Floppies was developed for this system. Larry Lovage appears to have the only known copy.
The Pornodore 69 maybe one of Eunuchs main competitors as far as operating systems go.