>> Would I be right in assuming that the
machines with SA400s
   >>had double sided drives and the ones with Canon drives were
   >>single sided? 
I know NOTHING about the machine being described.
But EVERY Shugart SA400 that I've ever seen or heard about was single
sided.  The double sided drives had different model numbers.
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Grumpy Ol' Fred        cisin(a)xenosoft.com