> -----Original Message-----
> From: IBM Mainframe Discussion List On Behalf Of Van Dalsen, Herbie
>
> [ snip ]
>
> With my limited experience I deducted the following:
>
> Someone wants to create a shared block of memory CSA/not and
> share it between programs. My understanding is that a 24-bit
> program can address 24-bit addresses, 31-bit...., 64-bit...
> So in my inexperienced mind the 24bit program could never
> share in the happiness of this above the bar heaven of shared storage.
Correct. For an amode24 program, the entire universe ends at address
x'00FFFFFF'; the "next step" wraps back to x'00000000'. So for an
amode24 program, there is nothing "above the line" or "above the bar"
because for it, there is neither a "line" nor a "bar".
-jc-
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