问题
I have some Linux code that monitors our hardware by collecting temperatures, voltages, and fan speeds, from the motherboard using inb(), outb(), inl(), etc. low level i/o functions.
My challenge is to port that code over to run under Windows as a simple console app. But am puzzled in what functions Win32 (or .NET) provide that allow me permission to access direct memory mapped ports.
I don't want to code a system driver either.
My Windows tool preference is VS2008. (fyi)
Is this possible?
回答1:
The default protection level for I/O ports in Windows prevents a user-mode program from using inp and out instructions on any port. Your program will die with a GPF. There are several freely available drivers around that change that protection level so that ring 3 code can access the ports. Which is okay if you're interested in killer pokes.
The canonical one is inpout32.
回答2:
Most hardware locations are mapped in areas not accesible from userspace, so you are going to need a device driver that provides the desired API.
You can also check the UNIX Application Migration Guide ad MSDN.
回答3:
Well, after much searching with some trial and error, the two most useful bits I found to be helpful are:
WinRing0 and IO.DLL .
They pretty much do the same thing, the difference is the samples of code you will find to help you get started using them.
Hope this helps for others.
来源：https://stackoverflow.com/questions/2607657/windows-equivalent-of-inb-outb-low-level-i-o