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If M/IO (active low) signal is ‘0’ then it indicates

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in Microprocessor by (39.4k points)
If M/IO (active low) signal is ‘0’ then it indicates

(a) I/O cycle

(b) Memory cycle

(c) I/O cycle or INTA cycle

(d) I/O cycle or HALT cycle

I have been asked this question in homework.

This interesting question is from Signal Descriptions of 80286 in division 80286-80287-A Microprocessor with Memory Management and Protection of Microprocessor

1 Answer

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by (49.2k points)
The correct choice is (c) I/O cycle or INTA cycle

To elaborate: If M/IO (active low) signal is ‘0’ then it indicates that an I/O cycle or INTA cycle is in the process, and if it is ‘1’, it indicates that a memory or a HALT cycle is in progress.

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