On Tue, 27 Nov 2012 14:55:16 -0600, Paul Gilmartin <[email protected]> wrote:

>It requires that software developers
>test on every available and possible future system.  Simply, it's irresponsible
>not to have made the behavior consistent across models.

Think Java.  The JVM can construct different instruction sequences (JIT 
compile) based on the the underlying hardware, determined when the JVM is 
started.

Scott Fagen
Chief Architect - Mainframe
CA Technologies

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