diff --git a/src/main.rs b/src/main.rs
index 4d366ff..6cc5fcd 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -331,3 +331,15 @@ fn cpu_ram_init(cpu: &mut CPU) {
     cpu.memory.set(0xFF48, 0xFF);
     cpu.memory.set(0xFF49, 0xFF);
 }
+
+#[allow(dead_code)]
+fn swap_rom_endian(rom: &ROM) -> ROM {
+    rom.chunks(2)
+        .map(|l| {
+            let mut m = l.to_owned();
+            m.reverse();
+            m
+        })
+        .flatten()
+        .collect()
+}