Michael Peppler sent this to the ASE-linux listserv:

The Developer Edition of ASE 12.5.0.1 is available for download from
http://www.sybase.com/ase_125devel

There is both an NT and a linux version.

The developer edition is a full featured version of ASE, with *all* the optional features turned on. It is limited to 25 user connections, and a single engine. And it's free.