Compaq DS20E - AlphaStation - 1 GB RAM User Manual page 161

Device type — The physical device as it exists on the system board.
MS-DOS name — Shows if the device is enabled, and if it is enabled, the
addressable MS-DOS name for the device.
Port address — The physical memory location for data received into the device,
and sent from the device, respectively.
Interrupt — The interrupt request line (IRQ) used by the device to get the CPU's
attention.
AlphaBIOS Console 5-19