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assemblyx86movaddressing

Is this x86 assembly addressing method valid?

Is mov al,31[di] a valid instruction? If it is, what does it do?

I'm having a debate and I can't access a computer right now (my android phone is not a computer). As you can see I'm pretty new at assembly and on Stack Overflow so sorry for any rule breaking :)

Solution

  • Yes, mov al, 31[di] is valid x86 assembly in Intel syntax. It is equivalent to mov al, byte ptr[di + 31].