Die Kollegen vom Chip-Architect scheinen in ihrem neuen Artikel handfeste Beweise für die Existenz der 64 Bit Erweiterung Yamhill im Prescott Core (Pentium 4 Northwood Nachfolger) gefunden zu haben.
We've found lots of prove for 64 bit processing now in Prescott's blue die image. Yamhill is for sure. That's what we can say. Virtual Addressing has been extended from 32 bit to 48 bit just like in the AMD Hammer family. We will demonstrate it with illustrated images of three different locations: The instruction TLB, The Trace Cache and the Front End Branch Target Buffers. Other examples of increased address space are scattered all over the chip. The processor however won't be called Prescott or Nocona anymore when the 64 bit features are enabled. New code names are used for 64 bit enabled processors. The later two will stay with a 32 bit virtual address space but have their physical address space already extended from 36 to 40 bit as seems to be mentioned in manuals still under NDA.
Auch über Intels neue "Sicherheitstechnologie" La Grande wird ein wenig spekuliert:
La Grande: A tiny embedded processor for micro-code decryption and other purposes? Maybe I'm fooling myself, After all, what led me to the ideas below was an Intel patent granted on April 1st, 2003 ! US patent 6549821. Not an Oregon patent however, but la Grande is to be supported by all processors. It talks among other things about downloading encrypted micro code for security reasons. This would need a little decryption engine next to the micro-code instruction sequencer.
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