Simple Programs 8085 with Arithmetic and Logical Operations

Simple Programs with Arithmetic and Logical Operations

Write a program to add two numbers 40H and 20H  and keep the result in register B.

MOV B,40H                         moves the 40H(data) to register B

MOV A,20H                        Moves the 20H(data) to Accumulator

ADD B;                                Adds the content of register B with content of Acc. and stores in Acc.

MOV B,A                            Moves the content of accumulator to register B;

HLT                                    Terminates the program  

Write a program to subtract two numbers 40H and 20H and keep the result in register B.

MOV B,40H          moves the 40H(data) to register B

MOV A,20H           Moves      the 20H(data) to Accumulator

SUB B;                     Adds the content of register B with content of Acc. and stores in Acc.

MOV B,A                 Moves the content of accumulator to register B;

HLT                          Terminates the program

Write the ALP to load memory location 7090H and 7080 with data 40H and 50H and also swap the data.

MVI    H,70H

MVI    L,90H

MVI    M,40H

MVI     L,90H

MVI    M,50H

MOV   B,M

MVI     L,90H

MOV   A,M

STA    7080H

MOV   A,B

STA     7090H

HLT

2^ND METHOD

LXI      H,7090H

MVI     M,40H

LXI      H, 7080H

MVI     M, 50H

MOV    B, M

MVI      L, 90H

MOV     A, M

STA      7080H

MOV     A, B

STA      7090H

HLT

3^RD METHOD

MVI   A, 40H

LXI      D ,7090H

STAX  D

MVI     A,50H

STA    7080

HLT

Swap the data between 4040 and 8080

1^ST METHOD

LDA 4040

MOV B,A

LDA 8080

STA 4040

MOV A,B

LDA 4040

HLT

2^ND METHOD

LXI H,4040

MOV B,M

LXI H,8080

MOV D,M

MOV A,B

STA 8080

MOV A,D

STA 4040

HLT