wrap around the palette value

2 files changed, 3 insertions, 3 deletions

diff --git a/src/bin.rs b/src/bin.rs
index e608e7e..76ef5c9 100644
--- a/src/bin.rs
+++ b/src/bin.rs
@@ -2,8 +2,8 @@ extern crate core;
 
 use std::fs::File;
 use std::io::Read;
-use core::cell::RefCell;
-use core::intrinsics::transmute;
+use std::cell::RefCell;
+use std::intrinsics::transmute;
 use std::time::{Instant, Duration};
 use std::thread::sleep;
 
diff --git a/src/ppu.rs b/src/ppu.rs
index 095e3e1..faf0664 100644
--- a/src/ppu.rs
+++ b/src/ppu.rs
@@ -440,7 +440,7 @@ impl<'a> PPU<'a> {
                             0 => 0,
                             _ => bg
                         }
-                     }));
+                     }) & 0x3f);
     }
 
     pub fn new(mem: PPUMemory<'a>, scr: &'a mut Screen) -> Self {