Statement I: Consider the 20-bit 'Branch' microinstruction format: F1 (3 bits), F2 (3), F3 (3), CD (2), BR (2), AD (7), where F1–F3 are micro-operation fields, CD is the branch condition, BR the branch field and AD the address field. Statement II: An instruction in this format can perform a branch in 4 conditions.
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Correct answer: A. Both Statement I and Statement II are correct
Explanation
The 20-bit format 3 + 3 + 3 + 2 + 2 + 7 is Mano's microinstruction format (Statement I correct). The 2-bit CD field selects one of 2² = 4 branch conditions (Statement II correct).
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