Assembly program question

[sagar474]

BITS 16

	mov ax, 07C0h		; Set data segment to where we're loaded
	mov ds, ax;
	mov ax,9999
	mov ss,ax
	mov sp,0000h;


test_string db 'Test' ; it prints a if these two lines are erased 
mov si,test_string


;----------------------to print 'A' --------------------------------------------
	mov al,41h
	mov ah,0eh;	
	int 10h;
;-------------------------------------------------------------------------------------		
	
	jmp $; jump hear ie., infinite loop


	
times 510-($-$$) db 0	; Pad remainder of boot sector with 0s
	dw 0xAA55		; The standard PC boot signature

this program should print A bit it prints dose nothing

help
please

 

[FvM]

You have placed the string inside your code, so the processor will try to execute the data as instruction. It should be place somewhere else, e.g. after jmp $..

 

[sagar474]

I understood
its working
thank you