If the icon has the tooltype "classic" then it uses amiga.library.
What's the difference between having a tool icon with "classic" tooltype and having a project icon with UAE as default tool ?
The latter is already possible (kind of). Have a look at Aminet or OS4Depot (don't remember which). Somebody wrote a set of scripts for E-UAE which lets you launch ADF files by double click. As these are only scripts they should run on all of OS3, OS4 and MOS.
And UAE can have 8MB of chip ram without any hack.
Bye,
Thomas
