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PM_setIOPL
Set the I/O priveledge level for the current process
Declaration
int PMAPI PM_setIOPL(
int iopl)
Prototype In
pmapi.h
Parameters
iopl |
New IOPL to make active (0 - 3) |
Return Value
Previous IOPL active before the change was made
Description
This function is used to change the I/O privledge level of the current process, so that it can access I/O ports directly. This works on all supported OS'es to date, even on OS/2 and Windows NT/2000/XP, provided you have the necessary kernel level drivers or services installed.
See Also
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