Author: Robert Hyatt
Date: 21:00:20 06/04/04
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On June 04, 2004 at 23:42:36, Joshua Shriver wrote: > >> >> >>Opterons and alphas are great. Opteron is already significantly faster, >>however, and the gap will continue to widen as alpha development seems to have >>slowed way down since the rights were sold by DEC a few years back. >> >>Opteron looks like the chip of the future, although Intel has announced an >>X86-64 processor for their future, scheduled for early next year. How it will >>perform given the opteron will be 2 years old is a question to be answered once >>it is actually delivered... > > >I really love opterons.. I've been reading articles about it since it's >inception. >Particularly Opteron vs Itanium chips which I believe are also 64bit. > >I still feel the best bang for the bug is Opteron. Out of the myriad of >benchmarks and articles only a handfew have said Intanium is faster... since I >can't afford either I wont give comments, but I'll still put my money on an >Opteron (lol once I get the money, particularly a dual Opteron). > >As for opteron's is the instruction set different between the different >versions? I'd like to get started with assembly coded cores asap, so I'd like to >buy the cheapest opteron possible (perhaps in 5-6 months money and tuition >payment pending) and if the instruction set is relatively the same then there >shouldn't be a problem. Meanwhile I still have my eyes on a cheap $500 dell, >better than nothing (hoping if I dont get an opteron to at least get the >ubercheep dell in 5-6 months). > >Sincerely, >Joshua Shriver The architecture is X86. That means your mov eax, mem stuff will work just fine, except that it gets extended on the opteron (and eventual intel X86-64 as well) so that eax becomes rax for 64 bit registers, and then you get the new r8-r15 extra 8 registers that AMD added. I found it trivial to program, assuming you know X86 already. change the register names, and use the extra 8 that are not there in normal X86 and that's enough to get you started...
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