Microprocessor
The 8085 microprocessor enters into bus idle machine cycle whenever

None of these
 DAD RP instruction is executed
 RST 7.5 is recognized
 INTR interrupt is recognized

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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 cannot be interrupted by any mask able interrupt
 the microprocessor cannot be interrupted by any interrupt
 the microprocessor can be interrupted by a non-mask able interrupt

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Microprocessor
The stack pointer register in a microprocessor

 holds the address of the top of the stack
 counts the number of instructions being executing on the microprocessor
 keeps the address of the next instruction to be fetched
 counts the number of programs being executing on the microprocessor

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