Question

8086 write an assembly language program to find one's complement and two's complement of an 8-bit number

Answer 1

it is quite tough question

Answer 2

The given 8086 assembly language program finds one's complement and two's complement of an 8-bit number.

Explanation:

Algorithm –

• Firstly, get the data loaded from memory 3000 towards A (accumulator)

• Now, make the content in the accumulator complemented

• Let the content of the accumulator get stored in memory 3001 to ensure the 1's complementation.

• To get the 2's complement to add 01 to the content in Accumulator.

• Get content of accumulator recorded in memory 3002 (2’s complement)

• Terminate

Program :

Memory    Mnemonics       Operands       Comment

2000            LDA                   [3000]           [A] <- [3000]

2003            CMA                                         [A] <- [A^]

2004            STA                    [3001]             1’s complement

2007            ADI                      01                  [A] <- [A] + 01

2009            STA                   [3002]            2’s complement

200C            HLT                                           Stop

Hence, the given 8086 assembly language program finds the 1's and 2's complements of the numbers.