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

To: Jeff Kirk who wrote (86889)	1/13/2000 1:10:00 PM
From: kash johal	Respond to of 1575175

Jeff and thread, Re:"AMD x64 patents" BTW, Brian assumes this was filed recently. In fact it was probably filed SEVERAL years ago. Patent details ONLY become available to public ONCE a patent is granted - usually a 2-3 yr timeframe.: New AMD/X86-64 Patent (AMD) Posted By Brian Neal Thursday, January 13, 2000 - 8:05:08 AM AMD has just recently filed for a patent regarding increasing general registers in X86 processors. This patent seems to confirm our previous speculation on X86-64. A microprocessor in which a register file of the microprocessor includes a standard register set and an extension register set. The extension register set is available on an instruction-by-instruction basis based on the contents of an extension register key field of the microprocessor instruction. In one embodiment, the instruction set is compliant with an X86 type instruction set in all cases when the extension register key field is not equal to an extension register key value. A microprocessor comprises a register file and an instruction decode circuit. From this we can assume that X86-64 processors will indeed have extra registers on an instruction-by-instruction basis. This means IA-32 compatibility will be maintained, though the 64-bit mode and its corresponding instructions will not necessarily be so limited. Here's another quote which has a bit more depth to it (though I was tempted to remove the repeated occurances of the word "said" just to make things more readable <g>): an instruction decode circuit adapted to receive a microprocessor instruction, wherein said microprocessor instruction includes an extension register key field, and further wherein said instruction decode circuit is configured to access the contents of a selected extension register of said extension register set in response to receiving said microprocessor instruction if said extension register key field contains an extension register key value, and wherein said instruction decode circuit is further configured to access the contents of a selected standard register of said standard register set in response to receiving said microprocessor instruction if the contents of said extension register key field equal a value other than said extension register key value; Thanks to Idiot for sending me this link. "