School of Computer Science & Engineering
University of New South Wales
Advanced Operating Systems
COMP9242 2002/S2
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- Interface between hardware (device controller) and OS.
- Processes OS device requests and
controls device by writing to data & command registers.
- Monitors device by reading status & data registers
and handling device interrupts.
- Transfers data between OS buffers and device.
Gernot Heiser
2002-08-07