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Politics : Formerly About Advanced Micro Devices -- Ignore unavailable to you. Want to Upgrade?


To: FJB who wrote (51781)3/7/1999 2:24:00 AM
From: Tenchusatsu  Read Replies (1) | Respond to of 1573221
 
<I only read one or two articles on the subject, but I think Merced decodes and translates IA-32 instructions into IA-64 instructions. If this is incorrect, I hope someone can clarify.>

I don't know the details, but I'm pretty sure this is the case. Any IA-32 instruction gets fed into the little compatibility unit in the corner and gets translated into IA-64 instructions.

I don't think it's much of a big deal compatibility-wise. The good ole P6 core translates IA-32 instructions into internal RISC-like instructions. Same thing with the K6 and the K7. Almost no one implements IA-32 instructions directly anymore.

Tenchusatsu



To: FJB who wrote (51781)3/7/1999 3:55:00 PM
From: Paul Engel  Read Replies (1) | Respond to of 1573221
 
Bob - Re: "I think Merced decodes and translates IA-32 instructions into IA-64 instructions. If this is incorrect, I hope someone can clarify. "

Merced contains a physical IA 32 CPU, sharing resources, wherever possible, with the IA64 implementation.

Paul