Do an ALP programming to arrange numbers in ascending order.

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ORG 0000H                                ;storing the program from 0000h location in ROM

MOV R4,#05H                           ;load 05h in R5

AGAIN:                                      

MOV DPTR,#9000H                 ;load 9000h in DPTR(initializing pointer)

MOV R3,#05H                           ;load 05h in R3

BACK:

MOVX A,@DPTR                   ;fetching data from XRAM

MOV B,A                                  ;copy data of A to B

INC DPTR                                ;increment pointer location

MOVX A,@DPTR                   ;fetching next byte data from XRAM

MOV R1,A                                ;copy data of ACC to R1

CJNE A,B,TARGET                ;compare A with  B and jump if not equal(NEQ) 

TARGET: 

JNC NOEXCHANGE             ;if A is larger than B then no exchange  

MOV A,B                                  ;copy data of B to A

MOVX @DPTR,A                   ;copy the data of ACC to location pointed by DPTR                    

MOV A,R1                               ;copy data of R1 to ACC

DEC DPL                                 ;decrement DPL by one byte

MOVX @DPTR,A                  ;copy the data of ACC to location pointed by DPTR  

INC DPTR                               ;increment pointer location

NOEXCHANGE:

DJNZ R3,BACK                   ;decrement counter R3 ,if not zero then jump 

DJNZ R4,AGAIN

END 

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