;Prints a string from SI until a null.

printstr:

;Store the initial registers in the stack
push ax

;Print the string
.loop:
;Load the current character
lodsb
;Check for the string end
cmp al, 0x0
je .done
;Print the character
mov ah, 0xe
int 0x10
;Repeat for the next character
jmp .loop

.done:

;Load the initial registers from the stack
pop ax

ret