As far as I recall that was not a hardware problem. ISA PnP cards describe what they can do and then the driver picks one of the possibilities and programs the

As far as I recall that was not a hardware problem. ISA PnP cards describe what they can do and then the driver picks one of the possibilities and programs the card. It got fun when real sound blasters had broken config, so a generic driver (for a unix system) would fail. In my experience (playing with unix) IRQ conflicts was much more a dos/windows problem than hardware. Though the hardware was nasty too.