Question

Write an assembly language program using 8086 to add all the bytes value store in file consecutive memory location

Answer 1

Here is a program to lets say add 100 memory locations byte value

LDA 8500 // Some memory location say 8500

   // Load the accumulator with the address of memory viz 8500    

   MOV D, A

   // Move the accumulator value to the register D

   MVI E, 99

   // Load the E register with the counter 100 - 1

   LXI B, 8500 + 1 // Next memory location from where we have done LDA - 8501

   // Load immediate B C with the memory location

   LDAX B

   // Load Accumulator indirect A=[BC]

   ADD D

   //Add the content of the Accumulator to the Register D

   MOV D, A

   //Move the value in D to the Accumulator or register A

   INX B

   // Increment BC register pairs

   DCR E

   // Decrement the counter register

     JNZ 9000 //

   // Jump on no zero

   STA 9000 // Suitable memory location

   // Store the output into a memory location    

   HLT

   // Stop the program