From 00cd9af033cfaffce262dc972170dbec177af3e1 Mon Sep 17 00:00:00 2001
From: RSDuck <RSDuck@users.noreply.github.com>
Date: Sun, 21 Jul 2019 23:56:24 +0200
Subject: fix uninitialised memory mapping

---
 src/ARM.cpp  | 1 -
 src/CP15.cpp | 2 ++
 src/NDS.cpp  | 4 ++++
 3 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/ARM.cpp b/src/ARM.cpp
index dd0be6a..50ef8fd 100644
--- a/src/ARM.cpp
+++ b/src/ARM.cpp
@@ -124,7 +124,6 @@ void ARMv5::Reset()
         GetMemRegion = NDS::ARM9GetMemRegion;
     }
 
-    CP15Reset();
     ARM::Reset();
 }
 
diff --git a/src/CP15.cpp b/src/CP15.cpp
index 5b5f935..77244f2 100644
--- a/src/CP15.cpp
+++ b/src/CP15.cpp
@@ -258,9 +258,11 @@ void ARMv5::UpdatePURegions(bool update_all)
 
 void ARMv5::UpdateRegionTimings(u32 addrstart, u32 addrend)
 {
+    printf("initialising region timings %x %x\n", addrstart, addrend);
     addrstart >>= 12;
     addrend   >>= 12;
 
+
     if (addrend == 0xFFFFF) addrend++;
 
     for (u32 i = addrstart; i < addrend; i++)
diff --git a/src/NDS.cpp b/src/NDS.cpp
index 3de9c1f..0bde139 100644
--- a/src/NDS.cpp
+++ b/src/NDS.cpp
@@ -501,6 +501,10 @@ void Reset()
         ARM9ClockShift = 1;
         MainRAMMask = 0x3FFFFF;
     }
+    // has to be called before InitTimings
+    // otherwise some PU settings are completely
+    // unitialised on the first run
+    ARM9->CP15Reset();
 
     ARM9Timestamp = 0; ARM9Target = 0;
     ARM7Timestamp = 0; ARM7Target = 0;
-- 
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