Assembly Language Program to add 10 Bytes Data

Question: Write an assembly language program to add 10 data bytes. Data is stored in memory location starting from 4460H. The result is 8 bits only and in stored in 4480H.

Algorithm

Step 1: Point HL register pair to memory location 4460H

Step 2: Set up a decrement counter, say C from 0AH (for 10 data)

Step 3: Load Accumulator with 00H to clear content

Step 4: Move content of memory location to register B

Step 5: Add B with Accumulator (A) and store to A. (ADD command)

Step 6: Increase memory location by one

Step 7: Decrease C counter by one

Step 8: Until C is not equal to 0 repeat program control from Step 4:

Step 9: Store content of Accumulator to memory location 4480H

Step 10: Terminate the program

Assembly Language Program

Label	Instruction	Comments
	LXI H, 4460H ;	HL register pair points at memory location 4460H
	MVI C, 0A H ;	Sets up a decrement counter
	MVI A, 00H ;	Clears Accumulator
jump1:	MOV B, M ;	Moves content of memory location to B
	ADD B ;	Adds A and B and stores result at A
	INX H ;	HL pair points at *M+1* memory location
	DCR C ;	Decreases C counter by one
	JNZ jump1: ;	Until C is not control jumps to jump1:
	STA 4480H ;	Stores result at 4480H (when C=0)
	HLT ;	Terminates the program

Assembly Language Program

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