8051 Program – bcd to hex 8bit

; bcd to hex conversion
; input: 4000H
; output: 4001H
	ORG 0H
	BCD_ADDR EQU 4000H
MAIN:
MOV A, #ASCII_1	; fill memory with ascii
	MOV DPTR,#BCD_ADDR	; fill memory
	MOV A, #15H
	MOVX @DPTR,A
	LCALL CONV
	SJMP MAIN
CONV:
	MOV DPTR,#BCD_ADDR
	MOVX A,@DPTR
	MOV R5,A
	ANL A,#0F0H
	SWAP A
	MOV R1,A
	MOV A,R5
	ANL A,#0FH
	MOV R2,A
	MOV A,R1
	MOV B,#0AH
	MUL AB
	ADD A,R2
	INC DPTR
	MOVX @DPTR,A
	RET
	END

Steps:
Separate the given 8bit packed bcd number in to two 4bit unpacked bcd nibbles (bcd1 and bcd2)
Multiply bcd2 with 10
Add bcd1 to the answer from above.

START
GET MOST SIGNIFICANT DIGIT (MSD)
MSD = MSD x 10
HEX DATA = MSD + LSD (LEAST SIGNIFICANT DIGIT)
STORE HEX DATA
STOP

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Related topics:
8051 Program - decimal to hex   |   8051 Program - hex to decimal 8bit   |   8051 Program - decimal to ascii   |   8051 Program - ascii to decimal   |   8051 Program - hex to ascii   |   8051 Program - ascii to hex   |   8051 Program - bcd to ascii   |   8051 Program - ascii to bcd   |   8051 Program - hex to bcd 8bit   |   8051 Program - hex to bcd 12bit   |   8051 Program - memory subroutines   |   8051 Program - math subroutines   |   8051 Program - conversion subroutines

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List of topics: 8051

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