>>>>> Jochen Kunz writes:

>> All 64-bit PowerPC Linux
>> distributions only use 32-bit userland. 
Jochen> I think Linux is not the best example to folow.
Jochen> AIX does it the same way?
Jochen> Hmmm. Have to install AIX on my B50...

	Yes, all standard installed AIX applications are 32-bits.  AIX
apps are identical on 32-bit systems and 64-bit systems.  One can compile
and run 64-bit applications just fine, but there is no need to use a
64-bit app unless the app inherently needs 64-bit computation or
addressing.

David