lesson 6, segmentation

06-bootsector-segmentation/boot_sect_segmentation.asm

@@ -0,0 +1,27 @@
+mov ah, 0x0e ; tty
+
+mov al, [the_secret]
+int 0x10 ; we already saw this doesn't work, right?
+
+mov bx, 0x7c0 ; remember, the segment is automatically <<4 for you
+mov ds, bx
+; WARNING: from now on all memory references will be offset by 'ds' implicitly
+mov al, [the_secret]
+int 0x10
+
+mov al, [es:the_secret]
+int 0x10 ; doesn't look right... isn't 'es' currently 0x000?
+
+mov bx, 0x7c0
+mov es, bx
+mov al, [es:the_secret]
+int 0x10
+
+
+jmp $
+
+the_secret:
+    db "X"
+
+times 510 - ($-$$) db 0
+dw 0xaa55