diff --git a/assets-fx/img/bopti_1col.png b/assets-fx/img/bopti_1col.png
new file mode 100644
index 0000000..f1fca5b
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diff --git a/assets-fx/img/bopti_2col.png b/assets-fx/img/bopti_2col.png
new file mode 100644
index 0000000..793fe8b
Binary files /dev/null and b/assets-fx/img/bopti_2col.png differ
diff --git a/assets-fx/img/bopti_3col.png b/assets-fx/img/bopti_3col.png
new file mode 100644
index 0000000..660079b
Binary files /dev/null and b/assets-fx/img/bopti_3col.png differ
diff --git a/assets-fx/img/opt_gint_bopti.png b/assets-fx/img/opt_gint_bopti.png
new file mode 100644
index 0000000..8388216
Binary files /dev/null and b/assets-fx/img/opt_gint_bopti.png differ
diff --git a/src/gint/bopti.c b/src/gint/bopti.c
index 760c600..cf7fbc2 100644
--- a/src/gint/bopti.c
+++ b/src/gint/bopti.c
@@ -5,10 +5,10 @@
 #include <gintctl/gint.h>
 #include <gintctl/util.h>
 
+#ifdef FXCG50
 /* gintctl_gint_bopti(): Test image rendering */
 void gintctl_gint_bopti(void)
 {
-#ifdef FXCG50
 	extern bopti_image_t img_swift;
 	extern bopti_image_t img_swords;
 	extern bopti_image_t img_potion_17x22, img_potion_18x22;
@@ -62,5 +62,93 @@ void gintctl_gint_bopti(void)
 
 		key = getkey().key;
 	}
-#endif
 }
+#endif
+
+#ifdef FX9860G
+static void img(int x, int y, bopti_image_t *img, int sub, int flags)
+{
+	int ix = 0;
+	int w = img->width;
+
+	if(sub) x += 2, ix += 2, w -= 4;
+	dsubimage(x, y, img, ix, 0, w, img->height, flags);
+}
+#define img(x, y, i) img(x, y, & img_bopti_##i, sub, flags)
+
+void gintctl_gint_bopti(void)
+{
+	extern bopti_image_t img_opt_gint_bopti;
+	extern bopti_image_t img_bopti_1col;
+	extern bopti_image_t img_bopti_2col;
+	extern bopti_image_t img_bopti_3col;
+
+	int key = 0;
+	int cols=0, flags=DIMAGE_NONE, sub=0, back=0;
+
+	while(key != KEY_EXIT)
+	{
+		dclear(back ? C_BLACK : C_WHITE);
+
+		if(cols == 0)
+		{
+			img( -6, 4, 1col);
+			img( 20, 4, 1col);
+			img( 42, 4, 1col);
+			img( 64, 4, 1col);
+			img( 90, 4, 1col);
+			img(122, 4, 1col);
+
+			dsubimage(0, 10, &img_bopti_1col, 6, 0, 6, 4, flags);
+			dsubimage(5, 16, &img_bopti_1col, 6, 0, 6, 4, flags);
+			dsubimage(4, 22, &img_bopti_1col, 5, 0, 7, 4, flags);
+			dsubimage(3, 28, &img_bopti_1col, 4, 0, 8, 4, flags);
+			dsubimage(2, 34, &img_bopti_1col, 3, 0, 9, 4, flags);
+			dsubimage(1, 40, &img_bopti_1col, 2, 0,10, 4, flags);
+			dsubimage(0, 40, &img_bopti_1col, 1, 0,11, 4, flags);
+			dsubimage(0, 46, &img_bopti_1col, 0, 0,12, 4, flags);
+
+			img(33, 12, 1col);
+		}
+		else if(cols == 1)
+		{
+			img(-10,  4, 2col);
+			img( 28,  4, 2col);
+			img( 96,  4, 2col);
+			img( 46, 12, 2col);
+		}
+		else if(cols == 2)
+		{
+			img(-30,  4, 3col);
+			img( 90,  4, 3col);
+			img( -4, 12, 3col);
+			img( 64, 12, 3col);
+		}
+		else if(cols == 3)
+		{
+			img(  0, 4, 1col);
+			img( 20, 4, 1col);
+			img( 42, 4, 1col);
+			img( 64, 4, 1col);
+			img(116, 4, 1col);
+		}
+
+		dsubimage(0, 56, &img_opt_gint_bopti, 0,0,128,8, DIMAGE_NONE);
+		dsubimage(0, 56, &img_opt_gint_bopti, 0, 9*cols, 21, 8,
+			DIMAGE_NONE);
+		if(flags & DIMAGE_NOCLIP)
+		{
+			dsubimage(86, 56, &img_opt_gint_bopti, 86, 9, 21, 8,
+				DIMAGE_NONE);
+		}
+
+		dupdate();
+
+		key = getkey().key;
+		if(key == KEY_F1) cols = (cols + 1) % 4;
+		if(key == KEY_F4) sub = !sub;
+		if(key == KEY_F5) flags ^= DIMAGE_NOCLIP;
+		if(key == KEY_F6) back = !back;
+	}
+}
+#endif