Have a ZZ9000 (Zorro3) running here in my A4000T under a plain AmigaOS 3.1 system and the latest P96 version, the only thing I noticed after installing the ZZ9000 were some random crashes due to low stack issues, as under that old OS version many standard handlers/devices/tasks etc. running with too small stacks. So I grabbed StackAttack2.lha and PatchStack.lha from the Aminet and inserted the following lines right after SetPatch into the startup-sequence:
StackAttack 6144
PatchStack >NIL: "ramlib" 3072
No more issues since then under OS3.1. However, if you're going to use OS3.2 or OS3.9 then these patches shouldn't be required, as I'm pretty sure the stack issues are already fixed in the newer OS versions.
