可屏蔽和不可屏蔽中断之间的区别

中断是由CPU以外的组件引起的事件。它指示需要立即关注的外部事件的CPU。中断异步发生。可屏蔽和不可屏蔽中断是两种类型的中断。

1.可屏蔽中断：
可由CPU指令禁用或忽略的中断称为可屏蔽中断，该中断可沿触发或电平触发或电平触发。

Eg: 
RST6.5,RST7.5,RST5.5 of 8085 

2.不可屏蔽中断：
不能被CPU指令禁止或忽略的中断称为不可屏蔽中断。当响应时间很关键或在正常系统运行期间不应禁止中断时，通常使用不可屏蔽中断。这样的用途包括报告不可恢复的硬件错误，系统调试以及对诸如系统重置之类的情况进行分析和处理。

Eg:
Trap of 8085 

可屏蔽和不可屏蔽中断之间的区别：

SR.NO.	Maskable Interrupt	Non Maskable Interrupt
1	Maskable interrupt is a hardware Interrupt that can be disabled or ignored by the instructions of CPU.	A non-maskable interrupt is a hardware interrupt that cannot be disabled or ignored by the instructions of CPU.
2	When maskable interrupt occur, it can be handled after executing the current instruction.	When non-maskable interrupts occur, the current instructions and status are stored in stack for the CPU to handle the interrupt.
3	Maskable interrupts help to handle lower priority tasks.	Non-maskable interrupt help to handle higher priority tasks such as watchdog timer.
4	Maskable interrupts used to interface with peripheral device.	Non maskable interrupt used for emergency purpose e.g power failure, smoke detector etc .
5	In maskable interrupts, response time is high.	In non maskable interrupts, response time is low.
6	It may be vectored or non-vectored.	All are vectored interrupts.
7	Operation can be masked or made pending.	Operation Cannot be masked or made pending.
8	RST6.5, RST7.5, and RST5.5 of 8085 are some common examples of maskable Interrupts.	Trap of 8085 microprocessor is an example for non-maskable interrupt.