From b26175e8eb6b4e6b12a2478e1bb5321fc5af6b72 Mon Sep 17 00:00:00 2001
From: David Li <li.davidm96@gmail.com>
Date: Mon, 11 Jan 2016 09:57:39 -0700
Subject: Correct ReverseMmu (map 0 to present address)

---
 src/memory.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/memory.rs b/src/memory.rs
index 768ce59..83f53af 100644
--- a/src/memory.rs
+++ b/src/memory.rs
@@ -155,7 +155,7 @@ impl ReverseMmu {
 impl Mmu for ReverseMmu {
     fn translate(&self, address: isa::Address) -> isa::Address {
         let offset = address % 4;
-        (self.top - (address - offset)) + offset
+        (self.top - 4 - (address - offset)) + offset
     }
 }
 
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