From 832e1b7633a4bdfa0f44ab2898349e4690f6d64f Mon Sep 17 00:00:00 2001
From: Rekai Musuka <rekai@musuka.dev>
Date: Mon, 2 Aug 2021 22:37:40 -0500
Subject: [PATCH] fix(apu): implement WAVE RAM blocking

---
 src/apu.rs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/apu.rs b/src/apu.rs
index 0de2fa7..5ebb305 100644
--- a/src/apu.rs
+++ b/src/apu.rs
@@ -664,7 +664,11 @@ pub(crate) struct Channel3 {
 
 impl BusIo for Channel3 {
     fn read_byte(&self, addr: u16) -> u8 {
-        self.wave_ram[(addr - Self::WAVE_RAM_START_ADDR) as usize]
+        if self.enabled {
+            self.wave_ram[self.offset as usize]
+        } else {
+            self.wave_ram[(addr - Self::WAVE_RAM_START_ADDR) as usize]
+        }
     }
 
     fn write_byte(&mut self, addr: u16, byte: u8) {