Topic: Microprocessors
What will be content of Stack Pointer if following assembly code of 8051 microcontroller is executed immediately after reset?
PUSH 00h
POP 01h
POP 02h
- A. 07h
- B. 06h
- C. 0Ah
- D. 31h
Answer: B. 06h
Explanation: After a reset instruction, the stack pointer (SP) content in an 8051 microcontroller is 07H.
- PUSH 00h increments SP to 08H.
- POP 01h decrements SP to 07H.
- POP 02h decrements SP to 06H.
Thus, the stack pointer content is 06H.