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In complex instructions, when the instruction needs to be translated into more than 4 micro-operations, then the decoder transfers the task to

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In complex instructions, when the instruction needs to be translated into more than 4 micro-operations, then the decoder transfers the task to

(a) trace cache

(b) front end branch predictor

(c) microcode ROM

(d) none

This question was posed to me in semester exam.

This intriguing question comes from Features of Pentium 4, Netburst Microarchitecture For Pentium4 -1 topic in division Pentium 4 processor of Microprocessor

1 Answer

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by (49.2k points)
Correct choice is (c) microcode ROM

Explanation: In case of complex instructions, when the instruction needs to be translated into more than 4 micro-operations, then the decoder transfers the task to microcode ROM.

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