Question

write a program to add 2 numbers stored at c030 and c031. store the sum at c032 and carry at c033

Answer 1

//Manually store 1st no in the memory location C030 & 2nd no in the memory location C031

//Result is stored in C032 & C033

                     LXI H,C030

                     MVI C,00

                     MOV A,M

                     INX H

                     ADD M  

                     DAA

                    JNC FINAL

                    INR C

   FINAL:    STA C033

                    MOV A,C

                    STA C032

                    HLT

DAA will change the contents of accumulator from binary value to BCD digit. S, Z, CY ,AC, P flags are altered to reflect the result of the operation.

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