EC > GATE 2016 SET-1 > 8085 Microprocessor
In an 8085 system, a PUSH operation requires more clock cycles than a POP operation. Which one of the following options is the correct reason for this?
A
For POP, the data transceivers remain in the same direction as for instruction fetch (memory to processor), whereas for PUSH their direction has to be reversed.
B
Memory write operations are slower than memory read operations in an 8085 based system.
C
The stack pointer needs to be pre-decremented before writing registers in a PUSH, whereas a POP operation uses the address already in the stack pointer.
D
Order of registers has to be interchanged for a PUSH operation, whereas POP uses their natural order.

Correct : c

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