Provide an interface for drawing on the screen in VGA text mode

This interface allows the user to write strings and move the cursor in VGA text mode.

This closes #1.

1 files changed, 10 insertions, 10 deletions

diff --git a/kernel/src/lib.rs b/kernel/src/lib.rs
index 285ecff..b6bc55f 100644
--- a/kernel/src/lib.rs
+++ b/kernel/src/lib.rs
@@ -1,23 +1,23 @@
+#![feature(asm)]
 #![no_std]
 #![no_main]
 
+use crate::terminal::Terminal;
 use core::panic::PanicInfo;
 
+mod io;
+mod terminal;
+
 #[no_mangle]
 pub extern "C" fn kmain() -> ! {
-    let vga_buffer = 0xb8000 as *mut u8;
-
-    for (i, &byte) in b"LisibleOS Hello world".iter().enumerate() {
-        unsafe {
-            *vga_buffer.offset(i as isize * 2) = byte;
-            *vga_buffer.offset(i as isize * 2 + 1) = 0xb;
-        }
-    }
-
+    let mut terminal = Terminal::new();
+    terminal.clear();
+    terminal.put_string(b"LisibleOS\n");
+    terminal.put_string(b"> ");
     loop {}
 }
 
 #[panic_handler]
 fn panic(_info: &PanicInfo) -> ! {
     loop {}
-}
\ No newline at end of file
+}