8051 Program – hex to bcd 8bit

; 8bit hex to bcd conversion
; input: 4000H
; output: 4001H - 4002H
	ORG 0H
	HEX_ADDR EQU 4000H
MAIN:
	MOV DPTR,#HEX_ADDR	; fill memory
	MOV A, #1fH
	MOVX @DPTR,A
	LCALL CONV
	SJMP MAIN
CONV:
	MOV DPTR,#HEX_ADDR
	MOVX A,@DPTR
	MOV B,#64H	; divide by 100
	DIV AB
	INC DPTR
	MOVX @DPTR,A
	MOV A,B
	MOV B,#0AH ; divide by 10
	DIV AB
	SWAP A
	ADD A,B
	INC DPTR
	MOVX @DPTR,A
	RET
	END

Steps:
Find number of 100’s in the given number and store it in memory.
Find number of 10’s from remainder and store it in memory.
Find number of 1’s from remainder and store it in memory.

START
GET DATA CARRY =0, HUNDREDS =0, TENS=0
DATA =DATA -100
IS CARRY =1 ?. if no, HUNDREDS =HUNDREDS + 1 and go to above.
If yes, DATA = DATA + 100
DATA = DATA – 10
IS CARRY =1 ?. if no, TENS =TENS + 1 go to above.
If yes, DATA = DATA – 10
UNITS =DATA
STORE HUNDREDS ,TENS , UNITS
STOP

---

<< Previous :: Up :: Next >>

---

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 - bcd to hex 8bit   |   8051 Program - hex to bcd 12bit   |   8051 Program - memory subroutines   |   8051 Program - math subroutines   |   8051 Program - conversion subroutines

---

List of topics: 8051

---