Write a program to calculate the sum of the series of even numbers.

Write a program to calculate the sum of the series of even numbers.

Program statement :- Write a program in the ALP of 8085 to calculate the sum of series of even numbers. Assume that the length of the series is stored at memory location D000 H and the series itself begins at memory D001 H. Store the result at memory location E000 H. Draw flowchart.

   Explanation :-

1. Initialize the sum to zero. Load the count of numbers in register C. Iniialize pointer to start of series.
2. To check whether the number is even we will AND the number with 01 H. If the result of ANDing is zero it indicates that the number is even. We will add this even number to the initialised sum.
3. Decrement counter Increment source pointer to next location. Continue the process till sum of all even numbers is found. Store the sum at memory location E000 H.

Program :

Lable	Instruction	Comment
	LDA D000H MOV C,A MVI B, 00 H LXI H, D001 H	Initialize counter sum = 0 Initialize pointer
Back :	MOV A,M ANI 01 H JNZ SKIP MOV A,B ADD M MOV B,A	Get the number Mask Bit 1 to Bit 7 Don’t add if number is Odd Get sum SUM = Sum + data Store result in B register
SKIP:	INX H DCR C JNZ BACK STA E000H HLT	Increment pointer Decrement counter If counter =/ 0 repeat Store sum (Result) Terminate program execution

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