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To: Logos who wrote (56644)6/3/1998 1:45:00 AM
From: rudedog  Respond to of 186894
 
Logos -
the version of NT native to Alpha is different from the version native to X86
That won't be true for the 64 bit NT version. No one would run Merced as a server in IA32 mode, the IA32 products at that time will be cheaper and faster on the same code, even on a slower clock.
Microsoft has committed to a single code line for 64 bit NT across both Alpha and Merced - whether they can do it is another story, but that's the plan. The goal is to create as large a target for 64 bit apps as possible, which will eventually work to Intel's benefit but works to MSFT's benefit immediately.
Merced will be backward compatible with X86
I don't know how much you know about merced architecture but it is NOTHING LIKE X86. That's why merced will emulate X86 instructions in silicon. Even in IA64 mode, Merced sacrificed some of the pentium speed enhancements to go in a whole new direction, and applications will need to be written to native IA64 with compiler optimization to take advantage of Merced's best performance.