diff --git a/include/gint/drivers/r61523.h b/include/gint/drivers/r61523.h
index c4b5b3c..70d9fa1 100644
--- a/include/gint/drivers/r61523.h
+++ b/include/gint/drivers/r61523.h
@@ -16,6 +16,10 @@ extern "C" {
 /* r61523_display(): Update the entire display (320x528) */
 void r61523_display(uint16_t *vram);
 
+/* r61523_display_rect(): Update a rectangle (both bounds included). */
+void r61523_display_rect(
+    uint16_t *vram, int xmin, int xmax, int ymin, int ymax);
+
 /* r61523_win_set(): Set the display window */
 void r61523_win_set(int x1, int x2, int y1, int y2);
 
diff --git a/src/r61523/r61523.c b/src/r61523/r61523.c
index 598d236..41ce85d 100644
--- a/src/r61523/r61523.c
+++ b/src/r61523/r61523.c
@@ -109,7 +109,6 @@ void r61523_win_set(int x1, int x2, int y1, int y2)
 void r61523_display(uint16_t *vram)
 {
     r61523_win_set(0, 319, 0, 527);
-
     select(44);
 
     int row_offset = 0;
@@ -125,6 +124,23 @@ void r61523_display(uint16_t *vram)
     }
 }
 
+void r61523_display_rect(
+    uint16_t *vram, int xmin, int xmax, int ymin, int ymax)
+{
+    // dma_transfer_wait(0);
+    r61523_win_set(xmin, xmax, ymin, ymax);
+    select(44);
+
+    vram += 320 * ymin + xmin;
+    uint16_t volatile *DISPLAY = (void *)0xb4000000;
+
+    for(int y = 0; y < ymax - ymin + 1; y++) {
+        for(int x = 0; x < xmax - xmin + 1; x++)
+            *DISPLAY = vram[x];
+        vram += 320;
+    }
+}
+
 static bool r61523_update(int x, int y, image_t const *fb, int flags)
 {
     if(fb->format != IMAGE_RGB565)