bits 16 org 7c00h mov si, loading call print mov ax, 7d00h mov es, ax mov bx, $0 mov dl, 0 mov dh, 0 mov ch, 0 mov cl, 2 mov al, 1 mov ah, 2h int 13h mov si, loaded call print jmp 7d00h loading: db 'Loading OS into RAM...', 10, 13, 0 loaded: db 'Jumping to OS...', 10, 13, 10, 13, 0 print: mov ah, 0eh .loop: lodsb cmp al, 0 je .done int 10h jmp .loop .done: ret