In a message dated 3/24/2008 2:10:15 P.M. Central Daylight Time, [EMAIL PROTECTED] writes: >Even if the z10 offered a "Translate Extended" instruction, the OP couldn't count on it being there on every Customer's machine for quite a while. The OP can use dual paths. If executing on machines without the newer instruction, then use TR; if the newer instruction is available, then use it. But don't put the test inside the loop. Nor is there any guarantee that IBM won't redesign the internals of whatever today is the fastest way to do something so that on a future processor it is slower, as in changing microcode into millicode. Bill Fairchild Rocket Software
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