Lennart Sorensen <[EMAIL PROTECTED]> writes: > On Tue, Jun 20, 2006 at 12:32:18PM +0200, Goswin von Brederlow wrote: >> Exactly. Isn't the x86_64 instruction set basicaly the same as ia32 >> just with a few extra opcodes and more registers? Any general fault in >> the instruction set should still remain. > > x86 processors have multiple modes with different instructions and > registers in each mode. AMD decided to make long mode remove some old > features and in some cases replace them with new features.
But the changes in the instruction set are minimal. With a bit of care you can use the same inline asm code for ia32 and x86_64 for example. They didn't fix any fundamental flaws in the 386 instruction set. Just droped some later addons like mmx. That is what I ment. MfG Goswin -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]