8051 Program – square root of a given number 8bit

; square root of a given number 8bit
; input: 4000H
; output: 4001H
	ORG 0H
	IN_ADDR EQU 4000H
	OUT_ADDR EQU 4001H
MAIN:
	MOV DPTR,#IN_ADDR	; fill memory
	MOV A,#09
	MOVX @DPTR,A
	LCALL SQUAREROOT
	SJMP MAIN
SQUAREROOT:
	MOV DPTR,#IN_ADDR
	MOVX A,@DPTR
	MOV R1,A
	MOV R2,#01
loop:	MOV A,R1
	MOV B,R2
	DIV AB
	MOV R3,A
	MOV R4,B
	SUBB A,R2
	JZ result
	INC R2
	SJMP loop
result:	MOV DPTR,#OUT_ADDR
	MOV A,R3
	MOVX @DPTR,A
	RET
	END

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Related topics:
8051 Program - search an element in an array   |   8051 Program - search a byte in array and count match   |   8051 Program - square of a given number 8bit   |   8051 Program - square and cube operation   |   8051 Program - count number of ones in a byte   |   8051 Program - count 0 and 1 in a byte   |   8051 Program - memory subroutines   |   8051 Program - math subroutines   |   8051 Program - conversion subroutines

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List of topics: 8051

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