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The on-chip cache can be flushed using external hardware using

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The on-chip cache can be flushed using external hardware using

(a) FLUSH pin

(b) TERMINATE pin

(c) FLOW pin

(d) Pin FLUSH# or using software

I got this question by my school teacher while I was bunking the class.

This intriguing question originated from Numeric Coprocessor in chapter 32-bit Processors-80386, 80387 and 80486 of Microprocessor

1 Answer

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The correct answer is (d) Pin FLUSH# or using software

Explanation: The on-chip cache can be flushed using external hardware using pin FLUSH# or using the software. The flushing operation clears all the valid bits for all the cache lines.

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