David:
I'm not familiar with Cubase, and my Yamaha synth is much more humble, but any decent sequencer software will allow you to at least pick patches by number. Having the actual patch name in your software is helpful, but since I generally preview by number on my modules before selection anyway, I haven't needed it.
If you can find the initialization file for your sequencing software on your computer, you can even type the synth patch names in by hand if you have the time (and can't find an S80 patch list for Cubase on-line), so they'll appear in the software.
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"The problem with the world is that the ignorant are cock-sure, whereas the intelligent are full of doubt." - Bertrand Russell