Explain the addressing modes of 8086 microprocessor in I/O addressing.

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written 5.6 years ago by

I/O addresses in 8086 can be either 8–bit or 16-bit. I/O addresses can be used in two modes, direct and indirect addressing modes.

Direct Addressing Mode:

If we use 8-bit I/O address we get a range of 00H -- FFH. This gives a total of 256 I/O ports. Here we …

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