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Thread: OutPortB

  1. March 11th, 2005, 10:10 AM #1
    Quell
    Quell is offline Member +
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    OutPortB

    Hello.
    Anyone knows how to access outportB on windows NT systems?
    I think it has been disabled or something...any ideas what it is?
    thx
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  2. March 11th, 2005, 11:23 AM #2
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    NoHero
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    Re: OutPortB

    Quote Originally Posted by Quell
    Hello.
    Anyone knows how to access outportB on windows NT systems?
    I think it has been disabled or something...any ideas what it is?
    thx
    Only 0 privileged code segment (that's only the kernel) can use the outport functions to write data to a specified hardware port. Since you are running in usermode (and that means in privilge step 2) you won't be able to access the hardware. A kernel driver has the access rights to use the out instruction. So write one
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