Keyboard handling working

src/stdio.cpp

@@ -0,0 +1,35 @@
+#include "../include/stdio.h"
+
+#include "../include/types.h"
+
+void printf(const char* str) {
+    static uint16_t* VideoMemory = (uint16_t*)0xb8000;
+    static uint8_t x = 0, y = 0;
+
+    for (int i = 0; str[i] != '\0'; ++i) {
+        switch (str[i]) {
+            case '\n':
+                y++;
+                x = 0;
+                break;
+            default:
+                VideoMemory[80 * y + x] = (VideoMemory[80 * y + x] & 0xFF00) | str[i];
+                x++;
+                break;
+        }
+
+        //line feed after 80 chars (terminal width)
+        if (x >= 80) {
+            y++;
+            x = 0;
+        }
+        //we've reached max screen rows
+        if (y > 25) {
+            for (y = 0; y < 25; y++) {
+                for (x - 0; x < 80; x++) {
+                    VideoMemory[80 * y + x] = (VideoMemory[80 * y + x] & 0xFF00) | ' ';
+                }
+            }
+        }
+    }
+}