8051 Program – sum of a set of numbers

;sum of a set of numbers
;the sum is held by registers A and R7,
;where A has the low byte and R7 has the high byte.
	ORG 0H
	MEM EQU 40H
	COUNT EQU 10
MAIN:
	MOV R0,#MEM	; pointer to memory
	MOV R2,#COUNT	; number of values
	LCALL SUM
	SJMP MAIN
SUM:
	CLR A	; clear accumulator
	MOV R7, A	; clear R7
again:	ADD A, @R0	; A= A+ value at R0
	JNC next	; Jump if No carry
	INC R7	; accumulate carry, if set
next:	INC R0	; increment pointer
	DJNZ R2, again	; repeat until R2 = 0
	RET
	END

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Related topics:
8051 Program - sum of set of numbers in external ram   |   8051 Program - average of a set of numbers   |   8051 Program - arithmetic operation 8bit   |   8051 Program - addition 8bit   |   8051 Program - subtraction 8bit   |   8051 Program - move block of data external memory   |   8051 Program - ram to ram   |   8051 Program - memory subroutines   |   8051 Program - math subroutines   |   8051 Program - conversion subroutines

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List of topics: 8051

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