Re: Risc 6000 Power3-II support

[David Edelsohn <dje%watson.ibm.com@localhost>]

>>>>> Jochen Kunz writes:

Jochen> Aha, interresting. Do we have 64 bit PowerPC support beside running a 64
Jochen> bit PowerPC CPU in 32 bit compatibility mode? (If there is such a mode?)

        64-bit PowerPC can run in 32-bit mode or 64-bit mode for the OS
and 64-bit mode or 32-bit mode for the applications.  A 32-bit OS can run
64-bit applications and vice-versa.  One needs a minimal amount of 64-bit
assembly code to manipulate the 64-bit memory management and machine
status registers, but one otherwise can run a 32-bit OS.  In other words,
the OS must be 64-bit aware, but need not run in 64-bit mode.

David