Print to vga buffer

Cargo.toml

@@ -11,4 +11,5 @@ panic = "abort"
 panic = "abort"
 
 [dependencies]
+bootloader = "0.6.0"
 

src/main.rs

@@ -8,7 +8,19 @@ fn panic(_info: &PanicInfo) -> !{
   loop {}
 }
 
+static GREETING: &[u8] = b"Gamarjoba, munde";
+
 #[no_mangle]
 pub extern "C" fn _start() -> ! {
+
+  let vga_buffer = 0xb8000 as *mut u8;
+
+  for (i, &byte) in GREETING.iter().enumerate() {
+    unsafe {
+      *vga_buffer.offset(i as isize * 2) = byte;
+      *vga_buffer.offset(i as isize * 2 + 1) = 0xb; //light cyan
+    }
+  }
+
   loop {}
 }