Aquarius USR()

When I first got my Mattel Aquarius some thirteen years ago, I remember going through the owner's manual, typing in all the programs and all that. The manual documented the USR() function as something to execute machine language, which was "beyond the scope of the manual." I looked for probably three years (until I got my Apple IIgs and lost interest) for info on "machine code." The only place I knew to look was the public library, which, of course, had nothing. Does anyone know more about this? I don't have my Aquarius where I'm living right now to play with, unfortunately. -- Andy Brobston brobstona(a)wartburg.edu ***NEW URL BELOW*** http://www.wartburg.edu/people/docs/personalPages/BrobstonA/home.html My opinions do not necessarily reflect the opinions of Wartburg College as a whole.