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Specify the accumulator content and flag status (S, Z, CY) as the following instructions are executed.
XRA A
XRA A
MVI B, 4AH
SUI 4FH
ANAB
HLT
- a)(FF)H, 0, 0, 1
- b)(FF)H, 0, 1, 0
- c)(00)H, 0, 0, 1
- d)(00)H,0, 1, 0
Correct answer is option 'D'. Can you explain this answer?
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Accumulator Content and Flag Status of Executed Instructions
XRA A
- XRA A performs a logical XOR operation of the accumulator with itself, resulting in the accumulator being set to zero.
- Accumulator content: 00H
- Flag status: S=0, Z=1, CY=0
MVI B, 4AH
- MVI B loads the value 4AH into register B.
- Accumulator content: 00H
- Flag status: S=0, Z=1, CY=0
SUI 4FH
- SUI subtracts the immediate value 4FH (79 in decimal) from the accumulator.
- Accumulator content: B1H
- Flag status: S=1, Z=0, CY=1
ANA B
- ANA performs a logical AND operation between the accumulator and register B.
- Accumulator content: 00H
- Flag status: S=0, Z=1, CY=1
HLT
- HLT instruction stops the program execution.
- Accumulator content: 00H
- Flag status: S=0, Z=1, CY=1
Conclusion
- Option D is the correct answer as it correctly identifies the accumulator content and flag status after the execution of the given instructions.
- The accumulator content and flag status are determined by the operation performed by each instruction and the values of the operands involved in the operation.
XRA A
- XRA A performs a logical XOR operation of the accumulator with itself, resulting in the accumulator being set to zero.
- Accumulator content: 00H
- Flag status: S=0, Z=1, CY=0
MVI B, 4AH
- MVI B loads the value 4AH into register B.
- Accumulator content: 00H
- Flag status: S=0, Z=1, CY=0
SUI 4FH
- SUI subtracts the immediate value 4FH (79 in decimal) from the accumulator.
- Accumulator content: B1H
- Flag status: S=1, Z=0, CY=1
ANA B
- ANA performs a logical AND operation between the accumulator and register B.
- Accumulator content: 00H
- Flag status: S=0, Z=1, CY=1
HLT
- HLT instruction stops the program execution.
- Accumulator content: 00H
- Flag status: S=0, Z=1, CY=1
Conclusion
- Option D is the correct answer as it correctly identifies the accumulator content and flag status after the execution of the given instructions.
- The accumulator content and flag status are determined by the operation performed by each instruction and the values of the operands involved in the operation.
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Specify the accumulator content and flag status (S, Z, CY) as the following instructions are executed.XRA AMVI B, 4AHSUI 4FHANABHLTa)(FF)H, 0, 0, 1 b)(FF)H, 0, 1, 0c)(00)H,0, 0, 1 d)(00)H,0, 1, 0Correct answer is option 'D'. Can you explain this answer?
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Specify the accumulator content and flag status (S, Z, CY) as the following instructions are executed.XRA AMVI B, 4AHSUI 4FHANABHLTa)(FF)H, 0, 0, 1 b)(FF)H, 0, 1, 0c)(00)H,0, 0, 1 d)(00)H,0, 1, 0Correct answer is option 'D'. 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 Specify the accumulator content and flag status (S, Z, CY) as the following instructions are executed.XRA AMVI B, 4AHSUI 4FHANABHLTa)(FF)H, 0, 0, 1 b)(FF)H, 0, 1, 0c)(00)H,0, 0, 1 d)(00)H,0, 1, 0Correct answer is option 'D'. 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 Specify the accumulator content and flag status (S, Z, CY) as the following instructions are executed.XRA AMVI B, 4AHSUI 4FHANABHLTa)(FF)H, 0, 0, 1 b)(FF)H, 0, 1, 0c)(00)H,0, 0, 1 d)(00)H,0, 1, 0Correct answer is option 'D'. Can you explain this answer?.
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