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arif19
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Asked: 2022-03-17T09:22:44+05:30 In:

  Question 1 5 Points AD0-AD7 lines are multiplexed and A8 to A15 are not multiplexed in 8085. State the …

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  1.  

    Question 1

    5 Points

    AD0-AD7 lines are multiplexed and A8 to A15 are not multiplexed in 8085. State the reason.

     

     
     

  2.  

    Question 2

    5 Points

    1. Create code snippet to

    a) load 00H to accumulator

    b) Decrement the accumulator

    c) Display the answer at 3004H  

microprocessor and interfacing
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    1 Answer

    2. I'M ADMIN

      1. The address bus has 8 signal lines A8-A15. They are unidirectional. The other 8 address bits are multiplexed with the 8 data bits. Therefore the bits AD0-AD7 are bi-directional. They serve as A0-A7 and D0-D7 at the same time. As AD7-AD0 lines serve a dual purpose they have to be demultiplexed to get all the information. Also, AD7-AD0 is easy to remember in comparison to A8D0-A15D7.

       

      2. MVI A,00H

      DCR A

      HLT

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