[Gllug] Are i386 & i586 rpm's interchangeable?

[Nix]

On Thu, 16 Aug 2001, Alain Williams gibbered:
> On Thu, Aug 16, 2001 at 01:55:19PM +0100, Paul Brazier wrote:
>> Or is there some degree of backwards compatibility for the x86's at the
>> machine code level?
> A 486 will barf if it meets one of the new 586 instructions; however they
> are compatible for the vast majority of the instruction set.

However, at least for the ppro a couple of commonly used instructions
(like CMOV) are new, so nearly all -march=pentiumpro code won't run on a
lesser machine.

(I'm not sure if the same is true of -march=pentium...)

-- 
`It's all about bossing computers around. Users have to say "please".
Programmers get to say "do what I want NOW or the hard disk gets it".'
                        -- Richard Heathfield on the nature of programming

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