Messages in this thread | | | Date | Wed, 15 Jun 2005 16:30:37 +0100 (BST) | From | "Maciej W. Rozycki" <> | Subject | Re: .../asm-i386/bitops.h performance improvements |
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On Wed, 15 Jun 2005, Bodo Eggert wrote:
> lea is an 8086 instruction. All clones have it in it's basic form. However, > the multiplicator is not documented for i486, therefore it will be a i586 > extension.
Huh? The SIB byte has been added in the original i386 with 32-bit addressing.
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