diff options
Diffstat (limited to 'CS3871/os/boot.s')
-rw-r--r-- | CS3871/os/boot.s | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/CS3871/os/boot.s b/CS3871/os/boot.s new file mode 100644 index 0000000..6dc9464 --- /dev/null +++ b/CS3871/os/boot.s @@ -0,0 +1,37 @@ + 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 |