In case you had not seen it already. I finally managed to control my big HP 7970E 9-track
tape and my HP 2631G dot matrix from the little HP 85 that could. Hey, they all talk the
same HP-IB after all (well, not really but close enough). Here is the resulting demo of
this odd 1970's trio:
https://youtu.be/YS9dGYUbNd0
Marc