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The IO device that can be interfaced with 8089 is

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in Microprocessor by (39.4k points)
The IO device that can be interfaced with 8089 is

(a) 16-bit IO

(b) 8-bit IO

(c) 64-bit IO

(d) 16-bit and 8-bit IO

The question was asked during an online exam.

My doubt stems from I/O Processor 8089 in chapter Multimicroprocessor Systems of Microprocessor

1 Answer

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by (49.2k points)
Correct choice is (d) 16-bit and 8-bit IO

To explain I would say: The 8089 handled IO devices need not have the same data bus width as that of 8089. This enables even 8-bit IO devices to be interfaced easily with 8089.

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