diff --git a/src/cpu/memtest/memtest.hh b/src/cpu/memtest/memtest.hh
index 7bf34d8272..264309fd76 100644
--- a/src/cpu/memtest/memtest.hh
+++ b/src/cpu/memtest/memtest.hh
@@ -116,7 +116,7 @@ class MemTest : public MemObject
 
         virtual void getDeviceAddressRanges(AddrRangeList &resp,
             AddrRangeList &snoop)
-        { resp.clear(); snoop.clear(); snoop.push_back(RangeSize(0,-1)); }
+        { resp.clear(); snoop.clear(); snoop.push_back(RangeSize(0,0)); }
     };
 
     CpuPort cachePort;
diff --git a/src/cpu/o3/fetch.hh b/src/cpu/o3/fetch.hh
index 04016347a4..e880e14e4a 100644
--- a/src/cpu/o3/fetch.hh
+++ b/src/cpu/o3/fetch.hh
@@ -98,7 +98,7 @@ class DefaultFetch
         /** Returns the address ranges of this device. */
         virtual void getDeviceAddressRanges(AddrRangeList &resp,
                                             AddrRangeList &snoop)
-        { resp.clear(); snoop.clear(); snoop.push_back(RangeSize(0,-1)); }
+        { resp.clear(); snoop.clear(); snoop.push_back(RangeSize(0,0)); }
 
         /** Timing version of receive.  Handles setting fetch to the
          * proper status to start fetching. */
diff --git a/src/cpu/o3/lsq.hh b/src/cpu/o3/lsq.hh
index 7559a36d57..e68085cfd8 100644
--- a/src/cpu/o3/lsq.hh
+++ b/src/cpu/o3/lsq.hh
@@ -313,7 +313,7 @@ class LSQ {
         /** Returns the address ranges of this device. */
         virtual void getDeviceAddressRanges(AddrRangeList &resp,
                                             AddrRangeList &snoop)
-        { resp.clear(); snoop.clear(); snoop.push_back(RangeSize(0,-1)); }
+        { resp.clear(); snoop.clear(); snoop.push_back(RangeSize(0,0)); }
 
         /** Timing version of receive.  Handles writing back and
          * completing the load or store that has returned from
diff --git a/src/cpu/ozone/front_end.hh b/src/cpu/ozone/front_end.hh
index e09e4de9c4..0acf99ead6 100644
--- a/src/cpu/ozone/front_end.hh
+++ b/src/cpu/ozone/front_end.hh
@@ -92,7 +92,7 @@ class FrontEnd
         /** Returns the address ranges of this device. */
         virtual void getDeviceAddressRanges(AddrRangeList &resp,
                                             AddrRangeList &snoop)
-        { resp.clear(); snoop.clear(); snoop.push_back(RangeSize(0,-1)); }
+        { resp.clear(); snoop.clear(); snoop.push_back(RangeSize(0,0)); }
 
         /** Timing version of receive.  Handles setting fetch to the
          * proper status to start fetching. */
diff --git a/src/cpu/ozone/lw_lsq.hh b/src/cpu/ozone/lw_lsq.hh
index 7e6849668a..c981b8e63f 100644
--- a/src/cpu/ozone/lw_lsq.hh
+++ b/src/cpu/ozone/lw_lsq.hh
@@ -258,7 +258,7 @@ class OzoneLWLSQ {
 
         virtual void getDeviceAddressRanges(AddrRangeList &resp,
                                             AddrRangeList &snoop)
-        { resp.clear(); snoop.clear(); snoop.push_back(RangeSize(0,-1)); }
+        { resp.clear(); snoop.clear(); snoop.push_back(RangeSize(0,0)); }
 
         virtual bool recvTiming(PacketPtr pkt);
 
diff --git a/src/cpu/simple/atomic.hh b/src/cpu/simple/atomic.hh
index 0df6fe079d..42c7bf23a6 100644
--- a/src/cpu/simple/atomic.hh
+++ b/src/cpu/simple/atomic.hh
@@ -106,7 +106,7 @@ class AtomicSimpleCPU : public BaseSimpleCPU
 
         virtual void getDeviceAddressRanges(AddrRangeList &resp,
             AddrRangeList &snoop)
-        { resp.clear(); snoop.clear(); snoop.push_back(RangeSize(0,-1)); }
+        { resp.clear(); snoop.clear(); snoop.push_back(RangeSize(0,0)); }
 
     };
     CpuPort icachePort;
diff --git a/src/cpu/simple/timing.hh b/src/cpu/simple/timing.hh
index fe5d036662..abcb224bfc 100644
--- a/src/cpu/simple/timing.hh
+++ b/src/cpu/simple/timing.hh
@@ -94,7 +94,7 @@ class TimingSimpleCPU : public BaseSimpleCPU
 
         virtual void getDeviceAddressRanges(AddrRangeList &resp,
             AddrRangeList &snoop)
-        { resp.clear(); snoop.clear(); snoop.push_back(RangeSize(0,-1)); }
+        { resp.clear(); snoop.clear(); snoop.push_back(RangeSize(0,0)); }
 
         struct TickEvent : public Event
         {
diff --git a/src/dev/alpha/tsunami_cchip.cc b/src/dev/alpha/tsunami_cchip.cc
index 924e1d4622..eb51d4e499 100644
--- a/src/dev/alpha/tsunami_cchip.cc
+++ b/src/dev/alpha/tsunami_cchip.cc
@@ -57,7 +57,7 @@ using namespace TheISA;
 TsunamiCChip::TsunamiCChip(Params *p)
     : BasicPioDevice(p), tsunami(p->tsunami)
 {
-    pioSize = 0xfffffff;
+    pioSize = 0x10000000;
 
     drir = 0;
     ipint = 0;
diff --git a/src/dev/alpha/tsunami_io.cc b/src/dev/alpha/tsunami_io.cc
index def214a952..8430856ef6 100644
--- a/src/dev/alpha/tsunami_io.cc
+++ b/src/dev/alpha/tsunami_io.cc
@@ -430,7 +430,7 @@ TsunamiIO::TsunamiIO(Params *p)
     : BasicPioDevice(p), tsunami(p->tsunami), pitimer(p->name + "pitimer"),
       rtc(p->name + ".rtc", p->tsunami, p->frequency)
 {
-    pioSize = 0xff;
+    pioSize = 0x100;
 
     // set the back pointer from tsunami to myself
     tsunami->io = this;
diff --git a/src/dev/alpha/tsunami_pchip.cc b/src/dev/alpha/tsunami_pchip.cc
index 94a7f96e5b..f30199337b 100644
--- a/src/dev/alpha/tsunami_pchip.cc
+++ b/src/dev/alpha/tsunami_pchip.cc
@@ -53,7 +53,7 @@ using namespace TheISA;
 TsunamiPChip::TsunamiPChip(Params *p)
 : BasicPioDevice(p)
 {
-    pioSize = 0xfff;
+    pioSize = 0x1000;
 
     for (int i = 0; i < 4; i++) {
         wsba[i] = 0;
diff --git a/src/dev/baddev.cc b/src/dev/baddev.cc
index 1bab934926..6a70604554 100644
--- a/src/dev/baddev.cc
+++ b/src/dev/baddev.cc
@@ -49,7 +49,7 @@ using namespace TheISA;
 BadDevice::BadDevice(Params *p)
     : BasicPioDevice(p), devname(p->device_name)
 {
-    pioSize = 0xf;
+    pioSize = 0x10;
 }
 
 Tick
diff --git a/src/python/m5/objects/Tsunami.py b/src/python/m5/objects/Tsunami.py
index c18210bba9..ac9020b47b 100644
--- a/src/python/m5/objects/Tsunami.py
+++ b/src/python/m5/objects/Tsunami.py
@@ -36,7 +36,7 @@ class Tsunami(Platform):
     fake_uart3 = IsaFake(pio_addr=0x801fc0002e8)
     fake_uart4 = IsaFake(pio_addr=0x801fc0003f0)
 
-    fake_ppc = IsaFake(pio_addr=0x801fc0003bc)
+    fake_ppc = IsaFake(pio_addr=0x801fc0003bb)
 
     fake_OROM = IsaFake(pio_addr=0x800000a0000, pio_size=0x60000)