Others

Printing bits of a 16-bit register

;this program prints all the bits of bx register
;this program also shows how we can use MACRO
org 100h
  display   macro   char
    ;just printing a char
            mov     al, char
            mov     ah, 0Eh
            int     10h  
  endm
 start:
    mov bx,3632;putting any random value in ax
    mov cx,16  ;16 because there are 16 bits in bx register
  begin:  
  ;shifting one byte to left, left most byte goes to carry flag
  ;we can shift more byte, eg shl bx,5 will shift 5 bytes
  ;shl bx,2 will be equal to multiplying ax with 2
  ;shr bx,2 will be equal to dividing ax with 2
    shl bx,1
    jc one ;jump to one if carry flag has 1 in it
    display '0'
    dec cx
    jnz begin;if cx is not zero than goto begin again
    jmp end
  one:
    display '1'
    dec cx
    jnz begin;if cx is not zero than goto begin again
 
    end:
 mov ax, 4ch; terminating

 int 21h

Running System Bell

;this program prints all the bits of bx register

;this program also shows how we can use MACRO

org 100h 

  display   macro   char

    ;just printing a char  

            mov     al, char

            mov     ah, 0Eh

            int     10h     

  endm

 start:

    mov bx,3632;putting any random value in ax

    mov cx,16  ;16 because there are 16 bits in bx register

  begin:    

  ;shifting one byte to left, left most byte goes to carry flag

  ;we can shift more byte, eg shl bx,5 will shift 5 bytes

  ;shl bx,2 will be equal to multiplying ax with 2

  ;shr bx,2 will be equal to dividing ax with 2 

    shl bx,1

    jc one ;jump to one if carry flag has 1 in it

    display '0'

    dec cx

    jnz begin;if cx is not zero than goto begin again

    jmp end  

  one:

    display '1'

    dec cx

    jnz begin;if cx is not zero than goto begin again

    

    end:

 mov ax, 4ch; terminating 

 int 21h  

There is no output you will hear only sound of system bell