Patches and discussion for Ensoniq VFX family

Hello,

I've found an SD-1 in pretty good shape, but I'm curious about a couple 
of MIDI specs. I don't want to buy the manual yet just to find this out 
(I guess that could be bought from Syntaur ...I can't find a pdf of it 
on the web)

1. I vaguely remember that it's poly aftertouch as well as channel, yes?

2. Does it transmit Velocity Off messages (like my EPS 16+)?

3. Can it transmit in Poly Mode? How many at once (for example, my EPS 
16+ can do 8)?

4. Does the board need a floppy to boot, like the Ensoniq samplers, or 
does the sequencer just need to boot from floppy? 


Thanks for any help,
Sam