Saturday, April 30, 2016

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



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

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