BITS    16
    org     $0000

stage2_start:
    mov     ax, 0
    mov     ss, ax                                              ; Set stack segment and pointer
    mov     sp, $0000

    mov     ax, $1000                                           ; Set segments to where we're loaded
    mov     ds, ax

    mov     si, str_stage2loaded                                ; Put string position into SI
    call    print_string                                        ; Call string printing routine

    jmp     $                                                   ; Jump here - infinite loop!

;========================================================================================
; Outputs the string in SI to the VGA adapter in text mode using INT10h.
;========================================================================================
print_string:
    mov     ah, $0E                                             ; int 10h 'print char' function

.repeat:
    lodsb                                                       ; Get character from string
    cmp     al, 0
    je      .done                                               ; If char is zero, end of string

    cmp     al, $0A                                             ; Process newline
    je      .newline

    int     $10                                                 ; Otherwise, print it (jump into BIOS)
    jmp     .repeat

.done:
    ret

.newline:
    mov     ah, $0E
    mov     al, $0D
    int     $10
    mov     al, $0A
    int     $10
    mov     ah, $0E                                             ; int 10h 'print char' function
    jmp     .repeat
;========================================================================================
; DATA SECTION
;========================================================================================
str_stage2loaded:
    db  'Stage 2 loaded!', 0