>I need to access 0x71 Hardware to program one data collect ISA card. Is there and Active or DLL that help me to do this directly from and Fox app ?
>In fact the ISA card has another 3 ports where the data is really read it/ write it depending on the kind of operation we need and how the ISA card is programed. The ports are 0x72, 0x73, 0x74. I will appreciate some help. Thanks

In addition to what Bill said, under modern OSs like NT/W2K/XP you are specifically forbidden from talking directly to the hardware. The card manufacturer will need to provide a driver so the card can be "installed" on those OSs and therefore made available for use.

The good news is, as Bill points out, hardware manufacturers realize this, and typically provide both device drivers and either an API or control of some sort to make interacting with the hardware much easier.