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Study Stuff for MCA Examinations - NIMCET
Study Stuff for MCA Examinations - NIMCET
Previous Year Question (PYQs)
Given below are two statements:Statement I: Consider $20$ bit 'Branch' microinstruction code format given below:
$F1,F2,F3$: Micro-operation fields$CD$: Condition for branching$BR$: Branch field$AD$: Address fieldStatement II: Instruction represented in above format can perform branch in $4$ conditions.In the light of the above statements, choose the most appropriate answer from the options given below:
| F1 | F2 | F3 | CD | BR | AD |
|---|---|---|---|---|---|
| $3$ bits | $3$ bits | $3$ bits | $2$ bits | $2$ bits | $7$ bits |
Solution
Statement I gives the format of a branch microinstruction.The total number of bits in the format is:
$3+3+3+2+2+7=20$
So, the given format is a $20$ bit microinstruction format.
Therefore, Statement I is correct.
Now check Statement II.
The field $CD$ is used for condition selection in branching.
Size of $CD$ field is:
$2$ bits
With $2$ bits, the number of possible conditions is:
$2^2=4$
So, the instruction represented in this format can perform branching based on $4$ possible conditions.
Therefore, Statement II is also correct.
Hence, both Statement I and Statement II are correct.
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