Interrupt Introduction MCQ Quiz – Objective Question with Answer for Interrupt Introduction

The PowerPC and MC68000 use the TRAP instruction set for accessing software interrupt. IBM PC uses 8086 NMI. Z80 uses SWI for accessing software interrupts.

For using the software interrupt more effectively, additional data are used, which specifies the type of the request, and data parameters are passed to the specific ISR. This additional data are offered by certain registers.

The MC68000 uses a software interrupt mechanism for accessing interrupts from the peripheral in which the instruction is created using the TRAP mechanism.

The additional data are offered by certain registers and these additional data are used to specify the type of the data parameter and the request with the specific ISR when running in the software interrupt mode.

The switching between user mode and supervisor mode provides protection for the processor, that is, the different modes in the software interrupt allow the memory and the associated code and data to be protected from each other.

The NMI stands for the non-maskable interrupt in which the external interrupts cannot be masked out.

The most commonly used non-maskable interrupt is the 80×86 NMI, which is implemented in the IBM PC.

In order to use the software interrupt more effectively, the additional data are used to specify the type of the request, and data parameters are passed to the specific ISR. This additional data are offered by certain registers. These registers are accessible by the ISR and they can also be used to pass the status information back to the calling software.

In the edge-triggered interrupt, the clock edge is used to generate an interrupt. The transition is from a logical low to high or vice versa.

In the level-triggered interrupt, the trigger is completely dependent on the logic level. The processors may require the level to be in a certain clock width so that the shorter pulses which are shorter than the minimum pulse width are ignored.