On Thu, 11 Dec 2003 13:11:54 -0600, you wrote:
To clarify a little, s390 has a 31-bit (2 GB) address space, but it is otherwise a "normal" 32-bit environment.
Yes, the 32nd Bit is used to signal betweens 31 bit and 24 bit addresses.
Best Regards:
Jochen Schmitt