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7. Re: Saturday Tech Bits Dec 16, 2012, 08:26 crypto
Creston wrote on Dec 16, 2012, 00:58:
Beelzebud wrote on Dec 15, 2012, 15:01:
What do you mean by compatible? An i386 and an i686 can both flip bits and run code, but they have vastly different architectures.

I'll admit that I have zero knowledge of processors. I was under the impression, however, we still considered modern day processors to be of the i386 variety? Or am I getting confused with x86?

It started in 1978 with the 8086 and each change after that "extended" on that, the 86 just means compatible with the last processor so now its just x86, which means the whole family. To say they are vastly different is not rally true since i686 is a i386 with major "additions". Code for i386 will run on i686 but code for i686 will not run on i386 because it doesn't have the things(registers) the code is trying to use. So the answer to your original question is yes, i386 is compatible with i686 but to make your i686 code run on a i386 requires alot of thinking and dumbed down machine code.
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