I/O interrupts & the CPUWatch
can ne 1 shed sum light on this 1 pleeeze.
if an I/O device interrupts the CPU. What sequence of events could possibly follow????
_1) The register values are stored, as is the PC value
2) A service routine identifies the interupting device
3) A service routine identifies the condition triggering the interupt
4) The CPU deals with the interupt
5) The state before the interupt is restored