;Write a program that will use INT 21h, Function 06 to get a character,
; and echo it back to screen.  If character = CONTROL_C, exit.
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
         .model small
	 .586
         .stack 100h    ;Set maximum stack size to 256 bytes


          .data 
msg       db "Starting Program!", 0ah, 0dh, "$"



          .code
START:    mov ax, @data        ;ax <-- data segment start address
          mov ds, ax                  ;ds <-- initialize data segment register
	 
          mov dx, offset msg
	  mov ah, 09h
	  int 21h             ; print message to screen
LP1:
          mov ah, 06h
          mov dl, 0FFh
	  int 21h             ; check if character available
          je  LP1             ; keep looping until character is ready

          cmp al, 03          ; '03' is ASCII value for a control-C
          je  EXIT
 
          mov ah, 02
	  mov dl,al
          int 21h             ; echo character to screen
          jmp LP1             ; go back to top

EXIT:     mov ax, 4c00h               ;ax <-- 4c DOS 21h program halt function
          int 21h                     ;DOS service interrupt



END       START


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