Microprocessor
Which of the following is not true during the execution of an interrupt service routine, which does not contain any EI instructions

 the microprocessor can be interrupted by a non-mask able interrupt
 the microprocessor cannot be interrupted by any mask able interrupt
 the microprocessor cannot be interrupted by any interrupt
 all interrupts except non-maskable interrupt are disabled

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Microprocessor
The interrupt facility is provided in microprocessor to

 stop the microprocessor when desired
 keep a control on the working of the microprocessor
 stop the microprocessor when it starts malfunctioning
 change the sequence of the instructions being executed

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