Matrix calculations on the HP-42S/Free42/DM-42

[DM48]

I ran into this issue yesterday and it was causing me all kinds of confusion. I found that simply hitting the -> and cycling all the way through and back to element 1:1, Stack Lift is disabled and I can key in my numbers without getting the zero on the Y stack.

This is exactly what Werner described above and it took me a minute to understand.