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Program to calculate the sum of the series of numbers

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Statement: Find the sum of the series of numbers. The length of the series is given in the memory location 2000H and the series itself begins from memory location 2001H. 

A). If the sum is an 8-bit number, store the sum at memory location 2005H. 

B). If the sum is a 16-bit number, store the sum at memory locations 2005H and 2006H.

A). 
EXAMPLE:

(2000H) = 04H
(2001H) = 30H
(2002H) = 15H
(2003H) = 13H
(2004H) = 33H

Result = 30H + 15H + 13H + 33H = 8BH
Therefore, (2005H) = 8BH

FLOW CHART:


PROGRAM:

              LDA 2000H          ; Get the length of the series
              MOV C, A            ; Initialise counter
              SUB A                  ; Make Sum = 0
              LXI H, 2001H      ; Initialise pointer
BACK: ADD M                 ; Sum = Sum + data
             INX H                    ; Increment pointer
             DCR C                   ; Decrement counter
             JNZ BACK            ; If counter is not equal to zero, repeat
             STA 2005H            ; Store result
             HLT                        ; Terminate program execution

B). 
EXAMPLE:

(2000H) = 04H
(2001H) = 62H
(2002H) = 52H
(2003H) = 3BH
(2004H) = 9AH

Result = 62H + 52H + 3BH + 9AH = 0189H
Therefore, (2005H) = 89H and (2006H) = 01H

FLOW CHART:


PROGRAM:

              LDA 2000H                 ; Get the length of the series
              MOV C, A                    ; Initialise counter
              LXI H, 2001H              ; Initialise pointer
              SUB A                          ; Make Sumlow = 0
              MOV B, A                    ; Make Sumhigh = 0
 BACK: ADD M                        ; Sum = Sum + data
              JNC SKIP                     ; If no carry,then move to SKIP
              INR B                           ; Add carry to higher byte of sum
   SKIP: INX H                           ; Increment pointer
              DCR C                          ; Decrement counter
              JNZ BACK                   ; If counter is not equal to zero, repeat
              STA 2005H                   ; Store lower byte of result
              MOV A, B                    ; Move higher byte of result
              STA 2006H                   ; Store higher byte of result
              HLT                               ; Terminate program execution
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