getstring:
        mov ah, 0x10            ; BIOS call, wait for key
        int 0x16                ; wait for key

        cmp al, 0x0d            ; check for a carriage return character
        je .newline             ; jump to the newline function

        mov ah, 0x0E            ; BIOS call, print string
        int 0x10                ; print the string

        jmp getstring           ; go back to the beginning


.newline:
        mov al, 0x0a
        int 0x10
        jmp prompt