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In LGDT instruction, while loading 6 bytes, the first word is loaded into the field of

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In LGDT instruction, while loading 6 bytes, the first word is loaded into the field of

(a) LIMIT field

(b) BASE field

(c) Either LIMIT or BASE field

(d) None of the mentioned

I had been asked this question in a dream while sleeping

This intriguing question comes from Instruction Set Features -2 in section 80286-80287-A Microprocessor with Memory Management and Protection of Microprocessor

1 Answer

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by (49.2k points)
Correct choice is (a) LIMIT field

To explain: While loading the 6 bytes, the first word is loaded into the LIMIT field of the descriptor table register. The next three bytes are loaded into the BASE field of the register, and the remaining byte is ignored.

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