Multiple choice

An 8255 chip is interfaced to an 8085 microprocessor system as an I/O mapped I/O as shown in the figure. The address lines A0 and A1 of the 8085 are used by the 8255 chip to decode internally its three ports and the Control register. The address lines A3 to A7 as well as the IO$\sqrt M$signal are used for address decoding. The range of addresses for which the 8255 chip would get selected is

  1. F8H - FBH

  2. F8H - FCH

  3. F8H - FFH

  4. F0H - F7H
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C Correct answer
Explanation

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