which instruction could be used in PMode

[chen17981]

hi, I just want to know which instructions could be used in PMode. Now I am very confused with instruction "outb" and "intb", in some codes I found them in PMode, but some documents told me that these instructions could not be used in Pmode.

[DennisCGc]

Those instructions could be used, when you're using it in privilige level 0. (it depends whether your IOPL flag set to).
like: if IOPL flag is set to 1 privilige levels 0 and 1 can use those instruction, if set to (IOPL flag) 2 levels 0,1 and 2 can use it, etc.
and it's btw "inb"

[chen17981]

Thank you. I will try