There was a pretty detailed article in the May 1985 Radio Electronics that mentioned interfacing it to a VIC-20:
https://archive.org/details/radio_electronics_1985-05/page/n...
Transactor Magazine volume 7, issue 4 (1987 ) had an article on interfacing it to a C64:
https://archive.org/details/transactor-magazines-v7-i04/mode...