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Determine the width of Micro-instruction having following Control signal field, in a Vertical Microprogrammed Control Unit
1. Next Address field of 7 Bits
2. ALU Function field selecting 1 out of 13 ALU Function.
3. Register-in field selecting 1 out of 13 ALU Function.
4. Register-out field selecting 1 out of 8 registers.
5. Shifter field selecting no shift, right shift or left shift.
6. Auxiliary control field of 4 bits.
  • a)
    22
  • b)
    23
  • c)
    24
  • d)
    25
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Determine the width of Micro-instruction having following Control sign...
Next Address Field = 7 Bits
ALU Function Field is of 4 Bits (to select possible 1 of 13 ALU fns)
Register-in and Register-out Fields of 3 Bits each Shifter Field of 2 bits to select 1 out of three possibilities:
Auxiliary Field of 4 Bits
Total Bits in μ-instruction
= 7 + 4 + 3 + 3 + 2 + 4 = 23
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Most Upvoted Answer
Determine the width of Micro-instruction having following Control sign...
Plz explain in detail
how Register in field and Register out- field contains 3 bits each
while Register in field selecting 13 alu func and required 4 bit for selecting one out of 13 alu func.
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Community Answer
Determine the width of Micro-instruction having following Control sign...
Calculation of Micro-instruction Width

Given Control Signal Fields:
- Next Address field: 7 bits
- ALU Function field: 13 options
- Register-in field: 13 options
- Register-out field: 8 options
- Shifter field: 3 options
- Auxiliary control field: 4 bits

Calculation:
- Next Address field: 7 bits
- ALU Function field: log2(13) = 4 bits (as 2^4 = 16 > 13)
- Register-in field: log2(13) = 4 bits
- Register-out field: log2(8) = 3 bits
- Shifter field: 2 bits (as 3 options can be represented in 2 bits)
- Auxiliary control field: 4 bits

Total Width:
Total width = 7 (Next Address) + 4 (ALU Function) + 4 (Register-in) + 3 (Register-out) + 2 (Shifter) + 4 (Auxiliary control)
Total width = 24 bits
Therefore, the width of the Micro-instruction in a Vertical Microprogrammed Control Unit is 24 bits. Hence, option 'B' (23) is the correct answer.
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Determine the width of Micro-instruction having following Control signal field, in a Vertical Microprogrammed Control Unit1. Next Address field of 7 Bits2. ALU Function field selecting 1 out of 13 ALU Function.3. Register-in field selecting 1 out of 13 ALU Function.4. Register-out field selecting 1 out of 8 registers.5. Shifter field selecting no shift, right shift or left shift.6. Auxiliary control field of 4 bits.a)22b)23c)24d)25Correct answer is option 'B'. Can you explain this answer?
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Determine the width of Micro-instruction having following Control signal field, in a Vertical Microprogrammed Control Unit1. Next Address field of 7 Bits2. ALU Function field selecting 1 out of 13 ALU Function.3. Register-in field selecting 1 out of 13 ALU Function.4. Register-out field selecting 1 out of 8 registers.5. Shifter field selecting no shift, right shift or left shift.6. Auxiliary control field of 4 bits.a)22b)23c)24d)25Correct answer is option 'B'. Can you explain this answer? for Computer Science Engineering (CSE) 2024 is part of Computer Science Engineering (CSE) preparation. The Question and answers have been prepared according to the Computer Science Engineering (CSE) exam syllabus. Information about Determine the width of Micro-instruction having following Control signal field, in a Vertical Microprogrammed Control Unit1. Next Address field of 7 Bits2. ALU Function field selecting 1 out of 13 ALU Function.3. Register-in field selecting 1 out of 13 ALU Function.4. Register-out field selecting 1 out of 8 registers.5. Shifter field selecting no shift, right shift or left shift.6. Auxiliary control field of 4 bits.a)22b)23c)24d)25Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Computer Science Engineering (CSE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Determine the width of Micro-instruction having following Control signal field, in a Vertical Microprogrammed Control Unit1. Next Address field of 7 Bits2. ALU Function field selecting 1 out of 13 ALU Function.3. Register-in field selecting 1 out of 13 ALU Function.4. Register-out field selecting 1 out of 8 registers.5. Shifter field selecting no shift, right shift or left shift.6. Auxiliary control field of 4 bits.a)22b)23c)24d)25Correct answer is option 'B'. Can you explain this answer?.
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