Steve Jobs said "Our hardware team got to cranking out a new Mac with Intel processors every month".
See his video
I think he wanted to say "....had to crank out..."
have to (modal verb) (also have got to) used to show that you must do something. E.g: Sorry, I've got to go.
but why not "got to crank out " but "got to cranking out" ?
"have to doing something" is not right?