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If Numeric Processor Write (NPWR) active-low input pin is activated, then it enables a data transfer from

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If Numeric Processor Write (NPWR) active-low input pin is activated, then it enables a data transfer from

(a) memory to processor

(b) 80287 to 80286

(c) 80286 to 80287

(d) 8086 to 80287

The question was posed to me during an interview.

My query is from 80287 Math Coprocessor -2 topic in division 80286-80287-A Microprocessor with Memory Management and Protection of Microprocessor

1 Answer

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by (49.2k points)
Right option is (c) 80286 to 80287

To explain: If Numeric Processor Write (NPWR) active-low input pin is activated, then it enables a data transfer from 80286 to 80287.

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