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The number of debug registers that are available in 80386, for hardware debugging and control is

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The number of debug registers that are available in 80386, for hardware debugging and control is

(a) 2

(b) 4

(c) 8

(d) 16

This question was posed to me in homework.

This interesting question is from Salient Features of 80386DX topic in chapter 32-bit Processors-80386, 80387 and 80486 of Microprocessor

1 Answer

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by (49.2k points)
Correct choice is (c) 8

Easy explanation: The 80386 offers a set of total eight debug registers DR0-DR7, for hardware debugging and control.

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