;lab3.asm
;demonstration for lab 3 - copying a chunk of memory
.MODEL SMALL
.STACK  64
.DATA
string db "Hello from procedure","$"
.CODE
start:
    mov ax, @data
    mov ds, ax
    ;start

    push offset string
    call puts

    call print_new_line

    ;end the program
    mov ah, 4ch
    mov al, 0
    int 21h

    ;procedure with params
    puts proc
        push bp ; must have
        mov bp,sp ; must have
        add bp,2 ;must have
        push dx
        push ax

        mov dx,[bp+2]
        mov ah,09
        int 21h

        pop ax
        pop dx
        pop bp
        ret 2 ; 2 because 1 param
    endp
    ;procedure without params
    print_new_line proc
        push ax
        push dx

        mov dl, 0ah
        mov ah,02
        int 21h
        mov dl, 0dh
        mov ah, 02
        int 21h
        pop dx
        pop ax
        ret
    endp
END start