Explain I/O related addressing mode of 8086.

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written 9.0 years ago by

meghalikalyankar • 2.3k

• modified 5.1 years ago

microprocessors and applications

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written 9.0 years ago by

meghalikalyankar • 2.3k

The 8086 can generate 16-bit of I/O address. Thus it can address up to 64 Kbyte I/O locations or 32 K word I/O locations.
The 16-bit I/O address appears on A_0 to A_15 address lines; A_16 to A_19 lines are at logic 0 during the I/O operations.
The 16-bit DX …

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