A: You can record the Base-Address of all cards first, and then calling I/O functions directly without ActiveBoard()function calls anymore. For example, to use ISO-P64 under Windows 2000:
// Get address first
1. ISO_ActiveBoard(0)
2. ISO_GetConfigAddress(&wBase0, &BoardNo)
3. ISO_ActiveBoard(1)
4. ISO_GetConfigAddress(&wBase1,&BoardNo)
// I/O directly
5. ISO_InputByte(wBase0+n)
6. ISO_InputByte(wBase1+n)
