Microprocessor
The content of the A15-A8 (higher order address lines) while executing “IN 8-bit port address” instruction are

 all bits reset (i.e. 00H)
 all bits set (i.e. FFH)
 irrelevant
 same as the content of A7-A0

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Microprocessor
In an 8085 microprocessor based system, the contents of SP are 2000H. POP H instruction will transfer the contents of memory location

 2000H and 1FFFH to H and L registers respectively
 2000H and 1999H to H and L registers respectively
 2001H and 2002H to H and L registers respectively
 2001H and 2000H to H and L registers respectively

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