This question already has an answer here:
Back in my Quake playing days, You could always pull up the Quake console with the ` key, and it would scroll up from the bottom of the screen.
Even further back I remember the same behaviour with our school's BBC microcomputers, Acorn/Archimedes etc.
It strikes me that would be super-useful on OSX. I use the terminal all the time.
Can anyone think of a clean solution?