Electronics and Communication Engineering (ECE) Exam > Electronics and Communication Engineering (ECE) Questions > The following sequence of instructions is exe...
Start Learning for Free
The following sequence of instructions is executed by an 8085 microprocessor.
1000 LXI SP, 27FF
1003 CALL
1006 1006 POPH
What are the contents of the stack pointer (SP) and the HL register pair after completion of execution of these instructions?
- a)SP = 27FF, HL= 1003
- b)SP = 27FD, HL = 1003
- c)SP = 27FF, HL= 1006
- d)SP = 27FD, HL = 1006
Correct answer is option 'C'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
The following sequence of instructions is executed by an 8085 micropro...
Most Upvoted Answer
The following sequence of instructions is executed by an 8085 micropro...
Explanation:
Let's analyze each instruction step by step to determine the contents of the stack pointer (SP) and the HL register pair after the execution.
LXI SP, 27FF:
This instruction loads the stack pointer with the value 27FF. So, after this instruction, the stack pointer (SP) will be 27FF.
CALL 1006:
This instruction pushes the address of the next instruction onto the stack and jumps to the specified address. In this case, it pushes the address of the next instruction (1003) onto the stack and jumps to the address 1006. Since the address of the next instruction is 1003, it will be pushed onto the stack.
POP H:
This instruction pops the top of the stack into the HL register pair. Since the address of the next instruction (1003) was pushed onto the stack in the previous instruction, it will be popped into the HL register pair. So, after this instruction, the HL register pair will be 1003.
Conclusion:
After the execution of these instructions, the contents of the stack pointer (SP) will be 27FF and the contents of the HL register pair will be 1003. Therefore, option 'C' is the correct answer.
Note:
It's important to note that the stack pointer (SP) is a 16-bit register that points to the top of the stack. The stack is a region of memory used for storing data temporarily during program execution. The stack grows downwards, so when data is pushed onto the stack, the stack pointer is decremented, and when data is popped from the stack, the stack pointer is incremented. The HL register pair is also a 16-bit register pair used for various operations in the 8085 microprocessor.
Let's analyze each instruction step by step to determine the contents of the stack pointer (SP) and the HL register pair after the execution.
LXI SP, 27FF:
This instruction loads the stack pointer with the value 27FF. So, after this instruction, the stack pointer (SP) will be 27FF.
CALL 1006:
This instruction pushes the address of the next instruction onto the stack and jumps to the specified address. In this case, it pushes the address of the next instruction (1003) onto the stack and jumps to the address 1006. Since the address of the next instruction is 1003, it will be pushed onto the stack.
POP H:
This instruction pops the top of the stack into the HL register pair. Since the address of the next instruction (1003) was pushed onto the stack in the previous instruction, it will be popped into the HL register pair. So, after this instruction, the HL register pair will be 1003.
Conclusion:
After the execution of these instructions, the contents of the stack pointer (SP) will be 27FF and the contents of the HL register pair will be 1003. Therefore, option 'C' is the correct answer.
Note:
It's important to note that the stack pointer (SP) is a 16-bit register that points to the top of the stack. The stack is a region of memory used for storing data temporarily during program execution. The stack grows downwards, so when data is pushed onto the stack, the stack pointer is decremented, and when data is popped from the stack, the stack pointer is incremented. The HL register pair is also a 16-bit register pair used for various operations in the 8085 microprocessor.
Attention Electronics and Communication Engineering (ECE) Students!
To make sure you are not studying endlessly, EduRev has designed Electronics and Communication Engineering (ECE) study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Electronics and Communication Engineering (ECE).
|
Explore Courses for Electronics and Communication Engineering (ECE) exam
|
|
Similar Electronics and Communication Engineering (ECE) Doubts
Top Courses for Electronics and Communication Engineering (ECE)View all
The following sequence of instructions is executed by an 8085 microprocessor.1000 LXI SP, 27FF1003 CALL1006 1006 POPHWhat are the contents of the stack pointer (SP) and the HL register pair after completion of execution of these instructions?a) SP = 27FF, HL= 1003b) SP = 27FD, HL = 1003c) SP = 27FF, HL= 1006d) SP = 27FD, HL = 1006Correct answer is option 'C'. Can you explain this answer?
Question Description
The following sequence of instructions is executed by an 8085 microprocessor.1000 LXI SP, 27FF1003 CALL1006 1006 POPHWhat are the contents of the stack pointer (SP) and the HL register pair after completion of execution of these instructions?a) SP = 27FF, HL= 1003b) SP = 27FD, HL = 1003c) SP = 27FF, HL= 1006d) SP = 27FD, HL = 1006Correct answer is option 'C'. Can you explain this answer? for Electronics and Communication Engineering (ECE) 2024 is part of Electronics and Communication Engineering (ECE) preparation. The Question and answers have been prepared according to the Electronics and Communication Engineering (ECE) exam syllabus. Information about The following sequence of instructions is executed by an 8085 microprocessor.1000 LXI SP, 27FF1003 CALL1006 1006 POPHWhat are the contents of the stack pointer (SP) and the HL register pair after completion of execution of these instructions?a) SP = 27FF, HL= 1003b) SP = 27FD, HL = 1003c) SP = 27FF, HL= 1006d) SP = 27FD, HL = 1006Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Electronics and Communication Engineering (ECE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The following sequence of instructions is executed by an 8085 microprocessor.1000 LXI SP, 27FF1003 CALL1006 1006 POPHWhat are the contents of the stack pointer (SP) and the HL register pair after completion of execution of these instructions?a) SP = 27FF, HL= 1003b) SP = 27FD, HL = 1003c) SP = 27FF, HL= 1006d) SP = 27FD, HL = 1006Correct answer is option 'C'. Can you explain this answer?.
The following sequence of instructions is executed by an 8085 microprocessor.1000 LXI SP, 27FF1003 CALL1006 1006 POPHWhat are the contents of the stack pointer (SP) and the HL register pair after completion of execution of these instructions?a) SP = 27FF, HL= 1003b) SP = 27FD, HL = 1003c) SP = 27FF, HL= 1006d) SP = 27FD, HL = 1006Correct answer is option 'C'. Can you explain this answer? for Electronics and Communication Engineering (ECE) 2024 is part of Electronics and Communication Engineering (ECE) preparation. The Question and answers have been prepared according to the Electronics and Communication Engineering (ECE) exam syllabus. Information about The following sequence of instructions is executed by an 8085 microprocessor.1000 LXI SP, 27FF1003 CALL1006 1006 POPHWhat are the contents of the stack pointer (SP) and the HL register pair after completion of execution of these instructions?a) SP = 27FF, HL= 1003b) SP = 27FD, HL = 1003c) SP = 27FF, HL= 1006d) SP = 27FD, HL = 1006Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Electronics and Communication Engineering (ECE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The following sequence of instructions is executed by an 8085 microprocessor.1000 LXI SP, 27FF1003 CALL1006 1006 POPHWhat are the contents of the stack pointer (SP) and the HL register pair after completion of execution of these instructions?a) SP = 27FF, HL= 1003b) SP = 27FD, HL = 1003c) SP = 27FF, HL= 1006d) SP = 27FD, HL = 1006Correct answer is option 'C'. Can you explain this answer?.
Solutions for The following sequence of instructions is executed by an 8085 microprocessor.1000 LXI SP, 27FF1003 CALL1006 1006 POPHWhat are the contents of the stack pointer (SP) and the HL register pair after completion of execution of these instructions?a) SP = 27FF, HL= 1003b) SP = 27FD, HL = 1003c) SP = 27FF, HL= 1006d) SP = 27FD, HL = 1006Correct answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Electronics and Communication Engineering (ECE).
Download more important topics, notes, lectures and mock test series for Electronics and Communication Engineering (ECE) Exam by signing up for free.
Here you can find the meaning of The following sequence of instructions is executed by an 8085 microprocessor.1000 LXI SP, 27FF1003 CALL1006 1006 POPHWhat are the contents of the stack pointer (SP) and the HL register pair after completion of execution of these instructions?a) SP = 27FF, HL= 1003b) SP = 27FD, HL = 1003c) SP = 27FF, HL= 1006d) SP = 27FD, HL = 1006Correct answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
The following sequence of instructions is executed by an 8085 microprocessor.1000 LXI SP, 27FF1003 CALL1006 1006 POPHWhat are the contents of the stack pointer (SP) and the HL register pair after completion of execution of these instructions?a) SP = 27FF, HL= 1003b) SP = 27FD, HL = 1003c) SP = 27FF, HL= 1006d) SP = 27FD, HL = 1006Correct answer is option 'C'. Can you explain this answer?, a detailed solution for The following sequence of instructions is executed by an 8085 microprocessor.1000 LXI SP, 27FF1003 CALL1006 1006 POPHWhat are the contents of the stack pointer (SP) and the HL register pair after completion of execution of these instructions?a) SP = 27FF, HL= 1003b) SP = 27FD, HL = 1003c) SP = 27FF, HL= 1006d) SP = 27FD, HL = 1006Correct answer is option 'C'. Can you explain this answer? has been provided alongside types of The following sequence of instructions is executed by an 8085 microprocessor.1000 LXI SP, 27FF1003 CALL1006 1006 POPHWhat are the contents of the stack pointer (SP) and the HL register pair after completion of execution of these instructions?a) SP = 27FF, HL= 1003b) SP = 27FD, HL = 1003c) SP = 27FF, HL= 1006d) SP = 27FD, HL = 1006Correct answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice The following sequence of instructions is executed by an 8085 microprocessor.1000 LXI SP, 27FF1003 CALL1006 1006 POPHWhat are the contents of the stack pointer (SP) and the HL register pair after completion of execution of these instructions?a) SP = 27FF, HL= 1003b) SP = 27FD, HL = 1003c) SP = 27FF, HL= 1006d) SP = 27FD, HL = 1006Correct answer is option 'C'. Can you explain this answer? tests, examples and also practice Electronics and Communication Engineering (ECE) tests.
|
|
Explore Courses for Electronics and Communication Engineering (ECE) exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
x
![]()
For Your Perfect Score in Electronics and Communication Engineering (ECE)
The Best you need at One Place
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup