Actually the Sounds into a +Drive activated machine (so, a 1.1 OS )
are in the number of 512 divided between Bank A and Bank B.

Also they contain the Richard Devine collection.

The presets (Pattern speaking here)…are 64…but just have a fast listening to them while playing with Macro. Just for a rapid sight of some of the incredible things you can do with it.
Then erase/overwrite them and make your own dedicating a lot of time to knowing this machine.
It will give you back a lot of fun