Split window vertically and have both sides show one "viewport"?

I'm wondering if it's possible to split (an xterm) vim session
vertically into
two (like ctl-W ctl-V) and then have both sides be the same
"viewport".

I'm not sure if viewport the right term. What I mean by viewport is
that
if I type ctl-D the text would move up in the left window and text in
the right
window would move up too but the "overflow" from the top of the right
window would
go onto the bottom of the left window. Or if the cursor is in the left
window, if I repeatedly
type 'j', the cursor would go to the bottom of the left window then
jump to the top of
the right window. (Sort of like the flow of text flow in a magazine
layout.)

Is there a way to do this in vim?

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