Initial commit

boot.asm

@@ -0,0 +1,22 @@
+bits 16 ; 16 bit mode
+org 0x7c00
+
+boot:
+    mov si, message     ; Point SI register to message
+    mov ah, 0x0e        ; Set higher bits to the display character command
+
+.loop:
+    lodsb               ; Load the character within the AL register, and increment SI
+    cmp al, 0           ; Is the AL register a null byte?
+    je halt             ; Jump to halt
+    int 0x10            ; Trigger video service interrupt
+    jmp .loop           ; Loop again
+
+halt:
+    hlt                 ; stop
+
+message:
+    db "Hello, World ! From Nadir Kernel", 0x0a, 0x0d, 0x00
+
+times 510-($-$$) db 0   ; 510 bytes of zeros
+dw 0xAA55               ; boot signature