diff --git a/src/main.c b/src/main.c
index 2c0e397..7ae8ef8 100644
--- a/src/main.c
+++ b/src/main.c
@@ -297,9 +297,9 @@ handle_keyboard(void) {
 
                 // NOTE: Nook overrides.
                 switch (key_code) {
-                    case 156: { rune = 0x40; } break; // top left
-                    case 139: { rune = 0x40; } break; // bottom left
-                    case 151: { rune = 0x80; } break; // top right
+                    case 156: { rune = 0x10; } break; // top left
+                    case 139: { rune = 0x20; } break; // bottom left
+                    case 151: { rune = 0x40; } break; // top right
                     case 158: { rune = 0x80; } break; // bottom right
                     default: break;
                 }
@@ -558,19 +558,10 @@ main(int argc, char *argv[]) {
 
             // Blit ppu.pixels to the framebuffer.
             blit_framebuffer();
-            // TODO: make update frames and refresh frames as parameters instead
-            // of hardcoded
-            if (++frames_update > 5) {
+            if (++frames_update > frames_per_update) {
                 write(fb_file, "0", 0);
                 frames_update = 0;
             }
-            // NOTE: Maybe this should happen on blit_framebuffer depending on
-            // the number of actual updates (uxn applications that don't modify
-            // the framebuffer shouldn't have to blink).
-            if (++frames_refresh > 360) {
-                write(refresh_file, "1", 1);
-                frames_refresh = 0;
-            }
             frame_time = time_now();
         }
     }
diff --git a/src/ppu.c b/src/ppu.c
index 38b27e6..bedf02d 100644
--- a/src/ppu.c
+++ b/src/ppu.c
@@ -22,12 +22,17 @@
    WITH REGARD TO THIS SOFTWARE.
    */
 
+// Parameters.
+static int zoom = 2;
+static int frames_per_update = 5;
+static int blits_per_refresh = 60 * 5;
+
 static size_t screen_width = 0;
 static size_t screen_height = 0;
 static size_t bpp = 0;
 static int fb_file = 0;
 static int refresh_file = 0;
-static int zoom = 2;
+static frames_refresh = 0;
 
 static u8 *framebuffer = 0;
 
@@ -242,5 +247,12 @@ blit_framebuffer(void) {
         }
         dirty_lines[j] = 0;
     }
+    // NOTE: Maybe this should happen on blit_framebuffer depending on
+    // the number of actual updates (uxn applications that don't modify
+    // the framebuffer shouldn't have to blink).
+    if (++frames_refresh > blits_per_refresh) {
+        write(refresh_file, "1", 1);
+        frames_refresh = 0;
+    }
     reqdraw = 0;
 }