LAB 4 ( Write a program to PRINT 11*11 astaric and print 3letter in the middle)

 ;   Write a program to PRINT 11*11 astaric and print 3letter in the middle

.MODEL SMALL   ; IN THIS COURSE ALL MODEL ARE SMALL
.STACK 100H    ; WE ALWAYS USE STACK 100H


.DATA     ; DATA SEGMENT

    PROMPT     DB  "Enter three initials : $\"    ; to print it we store in it a prompt variable
    ASTERISKS  DB  "***********",0DH,0AH,"$"              ; to print 11*11 we store here 11 asterisks
    NEXT_LINE  DB  0DH,0AH,"$"                            ; we took new line here

 .CODE

    MAIN PROC   ; main code start here

    ;PROGRAMME SEGMENT PREFIX
    MOV AX,@DATA
    MOV DS,AX    ; INITILATION OF DS


     LEA DX, PROMPT  ; to print the prompt value we load the data
     MOV AH, 9       ; this instraction will print the loaded data
     INT 21H         ; this is used to print the instruction

     MOV AH, 1       ; it is used to input a single chracter
     INT 21H         ; computer will take a input here

     MOV BL, AL      ; move the input value in BL, as we know generally when we input it will store it on AL

     INT 21H         ; this will take another input

     MOV BH, AL      ; we move the next input into BH

     INT 21H         ; this will take the third input

     MOV CL, AL      ; we move the third input into CL

     LEA DX, NEXT_LINE  ; this instruction is used to take a new line.. as it contains new line
     MOV AH, 9          ; this function is to used the load value of new_line
     INT 21H            ; computer give new line here

     ; we print asterisks from here  as our input already taken

     LEA DX, ASTERISKS   ; we load the asterisks variable here.. as it contains *
     MOV AH, 9           ; this instruction is to print the loaded value

     INT 21H             ; computer will print 11* . because asterisks variable contains 11 *.. it will print 1 time
     INT 21H             ;  it will print 1 time  1 * 11
     INT 21H             ;  it will print 1 time  1 * 11
     INT 21H             ;  it will print 1 time  1 * 11
     INT 21H             ;  it will print 1 time  1 * 11

     ; at the end of this instruction we got 5 * 11 asteriks. now we print 4 * and the three initials and the other 4 * .. and then 5line 5*11 asteriks

     MOV ASTERISKS+4, BL   ; we print our first input value into 4th positon of asterisks
     MOV ASTERISKS+5, BH   ; we print our second input value into 5th positon of asterisks
     MOV ASTERISKS+6, CL   ; we print our third input value into 6th positon of asterisks

     INT 21H               ; this will print three variable into the 4,5,6 th position...

     MOV ASTERISKS+4, "*"  ; then we update 4th position into * to print the remain line in *
     MOV ASTERISKS+5, "*"  ; then we update 5th position into * to print the remain line in *
     MOV ASTERISKS+6, "*"  ; then we update 6th position into * to print the remain line in *

     INT 21H             ;  it will print 1 time  1 * 11
     INT 21H             ;  it will print 1 time  1 * 11
     INT 21H             ;  it will print 1 time  1 * 11
     INT 21H             ;  it will print 1 time  1 * 11
     INT 21H             ;  it will print 1 time  1 * 11

    MOV AH,4CH   ; TERMINATED THE CODE AND EXIT
    INT 21H

    MAIN ENDP
END MAIN