Saturday, August 27, 2011

WAP in 8051 to sort a block of data in ascending or descending order


; PROGRAM STARTS HERE


MOV R6, #07H ; EXTERNAL COUNTER
START : MOV R7, #07H ; INTERNAL COUNTER
MOV R0, #30H ; INTERNAL MEMORY ADDRESS
MOV A, #00H ; CLEAR ACCUMULATOR
; CY = 0 A>VAL
; CY = 1 A<VAL
BACK :   MOV A, @R0 ;
INC R0 ;
CJNE A, @R0, CARRY ;
SJMP DECREMENTC ;
CARRY : JC DECREMENTC ;
MOV B, @R0 ;
MOV @R0, A ;
DEC R0 ;
MOV A, B ;
MOV @R0, A ;
DECREMENTC : INC R0 ;
DJNZ R7, BACK ;
DJNZ R6, START ;
END

at

19 comments:

  1. UnknownSeptember 30, 2013 at 4:56 PM

    its showing error in 12th line .. "illegal operand"

    ReplyDelete
    Replies
    1. pklifehackerOctober 3, 2013 at 8:56 PM

      the space between ,and b shud nt come in that 12th line

      Delete
    2. k10bloggerOctober 10, 2013 at 1:16 PM

      Please Write the line your facing trouble, instead of the line number.

      Delete
  2. BasherainOctober 22, 2013 at 1:55 PM

    CJNE A, @R0, CARRY
    in this line a instruction error exists...

    ReplyDelete
  3. sudershanDecember 17, 2013 at 8:13 PM

    This comment has been removed by the author.

    ReplyDelete
  4. UnknownSeptember 22, 2015 at 1:47 AM

    this is incorrect the instruction
    cjne a, @r0, carry
    doesnot exist
    try another one

    ReplyDelete
    Replies
    1. k10bloggerSeptember 30, 2015 at 4:20 PM

      Please have a look at the following link...
      http://www.8052.com/51cjne

      A traditional 8051 has been used to execute this program..
      If you are using a new one or some new compiler or simulator the equivalent command has to be replaced....

      Delete
    2. AniketAugust 31, 2016 at 9:35 AM

      cjne should have A,B,carry in its syntax

      Delete
  5. UnknownSeptember 22, 2015 at 1:50 AM

    this is incorrect the instruction
    cjne a, @r0, carry
    doesnot exist
    try another one

    ReplyDelete
    Replies
    1. k10bloggerSeptember 30, 2015 at 4:20 PM

      Please have a look at the following link...
      http://www.8052.com/51cjne

      A traditional 8051 has been used to execute this program..
      If you are using a new one or some new compiler or simulator the equivalent command has to be replaced....

      Delete
    2. k10bloggerSeptember 30, 2015 at 4:22 PM

      That equivalent command i will redo and update soon.

      Delete
    3. UnknownMay 13, 2016 at 12:32 PM

      % PROGRAM FOR DESCENDING ORDER
      MOV R0,#0FH
      UP1:MOV R7,#0FH
      MOV R1,#30H
      UP:MOV A,@R1
      INC R1
      MOV B,@R1
      CJNE A,B,NEXT
      SJMP DOWN
      NEXT:JNC DOWN
      MOV @R1,A
      DEC R1
      MOV A,B
      MOV @R1,A
      INC R1
      DOWN: DJNZ R7,UP
      DJNZ R0,UP1
      END

      Delete
    4. UnknownMay 13, 2016 at 12:41 PM

      % program for ascending order

      MOV R0,#04H ;external counter
      UP1:MOV R7,#04H ;internal counter
      MOV R1,#30H
      UP:MOV A,@R1
      INC R1
      MOV B,@R1
      CJNE A,B,NEXT
      SJMP DOWN
      NEXT:JC DOWN
      MOV @R1,A
      DEC R1
      MOV A,B
      MOV @R1,A
      INC R1
      DOWN: DJNZ R7,UP
      DJNZ R0,UP1
      END

      Delete
    5. UnknownNovember 24, 2016 at 7:44 AM

      good work charusheela patil ....

      Delete
  6. UnknownOctober 23, 2017 at 12:29 AM

    How to write the code for arranging a block of binary numbers in ascending order ?

    ReplyDelete
    Replies
    1. k10bloggerNovember 5, 2017 at 9:08 PM

      Need information like how the binary numbers are stored?? Being a byte based memory system is stored as fixed sized array in memory as 1 or zero or some other way??

      Delete
  7. RkMarch 22, 2019 at 11:52 AM

    THIS PROGRAM WILL CERTAINLY WORK. ITS MY EFFORT. TRY OUT THIS ONE, 100% WORKING....
    ORG 0000H
    MOV R0,#40H
    MOV R2,#10
    RK:MOV R1,#40H
    MOV R3,#10
    KR:MOV A,@R0
    MOV B,@R1
    CJNE A,B,XY
    XY:JC KABIR
    MOV @R0,B
    MOV @R1,A
    KABIR:INC R1
    DJNZ R3,KR
    INC R0
    DJNZ R2,RK
    END

    ReplyDelete
  8. rahulFebruary 27, 2020 at 9:58 PM

    cjne a,00,carry
    try this....
    instead of @r0 ,register address is used in asm instruction

    ReplyDelete
  9. MICROWORLDDecember 29, 2022 at 11:29 AM

    DECENDING ORDER :

    0000| MOV R4,#0AH
    0002| AGAIN : MOV R3,#0AH
    0004| MOV R0,#30H
    0006| CLR C
    0007| UP : MOV A,@R0
    0008| MOV R1,A
    0009| INC R0
    000A| MOV A,@R0
    000B| SUBB A,R1
    000C| JC SKIP
    000E| MOV A,@R0
    000F| DEC R0
    0010| MOV @R0,A
    0011| MOV A,R1
    0012| INC R0
    0013| MOV @R0,A
    0014| SKIP : DJNZ R3,UP
    0016| DJNZ R4,AGAIN
    END


    ASENDING ORDER
    0000| MOV R4,#0AH
    0002| AGAIN : MOV R3,#0AH
    0004| MOV R0,#30H
    0006| CLR C
    0007| UP : MOV A,@R0
    0008| MOV R1,A
    0009| INC R0
    000A| MOV A,@R0
    000B| SUBB A,R1
    000C| JNC SKIP
    000E| MOV A,@R0
    000F| DEC R0
    0010| MOV @R0,A
    0011| MOV A,R1
    0012| INC R0
    0013| MOV @R0,A
    0014| SKIP : DJNZ R3,UP
    0016| DJNZ R4,AGAIN
    END

    ReplyDelete