2. Given the following set of events, show which routines the CPU is executing for times 0 to 100 ns. Each handler routine (with its interrupt request) takes 20 ns to complete. The priority of the interrupts ranges from IRQ6 as the highest priority interrupt to IRQ0 as the lowest priority interrupt Action Start of main program Iime ns 10 ns IROT R03 35 ns IRQ4 IRQ6 20 ns 50 ns Iime Action Start of Main Program IRQ1 ns 10 s