Add contents of two memory locations

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Statement : Add the contents of memory locations 4001H and 4001H and place the result in the memory locations 4002H and 4003H.

Sample problem:

(4000H)  =  7FH
(4001H)  =  89H
Result     =  7FH + 89H  =  108H
(4002H)  =  08H
(4003H)  =  01H


Source program:

LXI  H,  4000H   : “HL Points 4000H”
MOV  A,  M        : “Get first operand”
INX  H                 : “HL Points 4001H”
ADD  M               : “Add second operand”
INX  H                 : “HL Points 4002H”
MOV  M,  A        : “Store the lower byte of result at 4002H”
MVI  A,  00         : “Initialize higher bute result with  00H”
ADC  A               : “Add carry in the high byte result”
INX  H                : “HL Points 4003H”
MOV  M,  A       : “Store the higher byte of result at 4003H”
HLT                    : “Terminate program execution”

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