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i'm afraid to tell you that it allows!! BUT when you run the program let it runs as a windows 95 or 98 even dos from properties!!! right click on your app > properties and then run as: (choose your operator)
Direct port acces from 16 bit app is possible under WinNT or Win2K or WinXP, if using special Kernel Mode VDD drivers or enable access in IOPM table
* This holds 8K * 8 bits -> 64K bits of the IOPM, which maps the
* entire 64K I/O space of the x86 processor. Any 0 bits will give
* access to the corresponding port for user mode processes. Any 1
* bits will disallow I/O access to the corresponding port.