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By adding which of the following, the minimum mode of 80286 gives the multibus interface of 80286?

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By adding which of the following, the minimum mode of 80286 gives the multibus interface of 80286?

(a) bus controller

(b) bus arbiter

(c) interrupt controller

(d) all of the mentioned

I got this question in an international level competition.

This intriguing question originated from 80286 Minimum System Configuration,  Interfacing Memory and I/O Devices With 80286 in chapter 80286-80287-A Microprocessor with Memory Management and Protection of Microprocessor

1 Answer

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by (49.2k points)
Right choice is (b) bus arbiter

Explanation: The addition of single chip 82C289 known as bus arbiter, to the configuration of 80286 minimum mode, gives the multibus structure of 80286.

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