Microprocessor
PUSH B instruction in 8085 microprocessor causes

 registers B & C to be cleared
 the contents of register B & C to be copied in the stack
 the contents of registers B & C to be transferred in the stack and and the registers get cleared
 the contents of register B only to be copied in the stack

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

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

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