These drivers, IRQGen and IRQGenM, are for IRQ handling. They work with all cards in Windows 9x and NT4, and with ISA, PC/104, and PCMCIA cards in Windows 2000 and XP.

They DO NOT work with PCI cards in Windows 2000 and XP; use AIOWDM for this. (AIOWDM also works in Windows 98SE and Me.)