In case anyone is interested, I've posted a scan of the Monrobot XI Quikomp reference card. This is the language I used to program the Monrobot XI when I was in junior high school back in the 60's. I'm not sure if this is the actual machine language of the machine but it is the only documentation that I have left. It is on my rather lame web page is at: http://www.mv.com/ipusers/xlisper/index.html