VIA 4-in-1 Driver Updated 09/06/99 The 4-in-1 driver is suitable for all VIA chipsets using Windows 95, 98, 98SE, NT. This driver will install the: IDE Busmaster (2.1.41) VIA AGP 3.55 IRQ Routing Driver (1.3a) VIA Registry (ACPI). Also included is the VIA DMA Tool which facilitates the adjustment of DMA settings. The 4-in-1 Driver will automatically detect which versions of drivers you are currently using as well as determine the necessity to upgrade.