keyboard input is now in irq compliant mode

kernel-rs/mk/grub.mk

@@ -7,3 +7,4 @@ $(grub-iso): $(kernel) $(grub-cfg) Makefile
 	@cp $(grub-cfg) $(isodir)/boot/grub
 	@cp $(kernel) $(isodir)/boot/$(OS)
 	@grub-mkrescue -o $@ $(isodir) 2>/dev/null
+	@printf "\r\033[38;5;117m✓ GRUB ==> $(grub-iso)\033[0m\033[K\n"

kernel-rs/src/keyboard.rs

@@ -76,13 +76,23 @@ fn check_key_state(key: u8) -> (bool, usize) {
     }
 }
 
+fn get_scancode() -> u8 {
+    let mut scancode = 0;
+    loop {
+        if cpuio::inb(0x60) != scancode {
+            scancode = cpuio::inb(0x60);
+            if scancode > 0 {
+                return scancode;
+            }
+        }
+    }
+}
+
 pub fn kbd_callback() {
     static mut SHIFT: bool = false;
     static mut CTRL: bool = false;
     static mut ALT: bool = false;
-    let control = cpuio::inb(0x64);
-    if (control & 1) == 1 {
-        let scancode = cpuio::inb(0x60);
+    let scancode = get_scancode();
     let (is_release, scancode) = check_key_state(scancode);
     unsafe {
         //TODO remove unsafe
@@ -100,9 +110,7 @@ pub fn kbd_callback() {
                 let sym = if SHIFT { ascii[1] } else { ascii[0] };
                 vga::VGA.keypress(sym);
             }
-                Some(_) => {}
-                None => {}
-            }
+            _ => {}
         }
     }
 }