Write a program to load a byte in memory location 9000H & increment the contents of the location

MOV DPTR, #9000H           /* LOAD DPTR WITH 9000H

MOV A, #48H                       /* LOAD ACC WITH 48H

MOVX @DPTR, A              /* COPY A INTO MEMORY LOCATION 9000H

INC A                                    /*  A=A+1 = 49H

MOVX @DPTR, A              /* LOAD 49H INTO EXTERNAL MEMORY 9000H