diff --git a/dev/alpha_console.cc b/dev/alpha_console.cc
index 2e9e09e935..111b23c816 100644
--- a/dev/alpha_console.cc
+++ b/dev/alpha_console.cc
@@ -50,11 +50,12 @@
 #include "sim/builder.hh"
 #include "sim/system.hh"
 #include "dev/tsunami_io.hh"
+#include "sim/sim_object.hh"
 
 using namespace std;
 
 AlphaConsole::AlphaConsole(const string &name, SimConsole *cons, SimpleDisk *d,
-                           System *system, BaseCPU *cpu, TsunamiIO *clock,
+                           System *system, BaseCPU *cpu, SimObject *clock,
                            int num_cpus, MemoryController *mmu, Addr a,
                            HierParams *hier, Bus *bus)
     : PioDevice(name), disk(d), console(cons), addr(a)
@@ -79,8 +80,14 @@ AlphaConsole::AlphaConsole(const string &name, SimConsole *cons, SimpleDisk *d,
     alphaAccess->numCPUs = num_cpus;
     alphaAccess->mem_size = system->physmem->size();
     alphaAccess->cpuClock = cpu->getFreq() / 1000000;
-    alphaAccess->intrClockFrequency = clock->frequency();
-
+    TsunamiIO *clock_linux = dynamic_cast<TsunamiIO *>(clock);
+    TlaserClock *clock_tru64 = dynamic_cast<TlaserClock *>(clock);
+    if (clock_linux)
+        alphaAccess->intrClockFrequency = clock_linux->frequency();
+    else if (clock_tru64)
+        alphaAccess->intrClockFrequency = clock_tru64->frequency();
+    else
+        panic("clock must be of type TlaserClock or TsunamiIO\n");
     alphaAccess->diskUnit = 1;
 }
 
@@ -267,7 +274,7 @@ BEGIN_DECLARE_SIM_OBJECT_PARAMS(AlphaConsole)
     Param<Addr> addr;
     SimObjectParam<System *> system;
     SimObjectParam<BaseCPU *> cpu;
-    SimObjectParam<TsunamiIO *> clock;
+    SimObjectParam<SimObject *> clock;
     SimObjectParam<Bus*> io_bus;
     SimObjectParam<HierParams *> hier;
 
@@ -282,7 +289,7 @@ BEGIN_INIT_SIM_OBJECT_PARAMS(AlphaConsole)
     INIT_PARAM(addr, "Device Address"),
     INIT_PARAM(system, "system object"),
     INIT_PARAM(cpu, "Processor"),
-    INIT_PARAM(clock, "Turbolaser Clock"),
+    INIT_PARAM(clock, "Clock"),
     INIT_PARAM_DFLT(io_bus, "The IO Bus to attach to", NULL),
     INIT_PARAM_DFLT(hier, "Hierarchy global variables", &defaultHierParams)
 
diff --git a/dev/alpha_console.hh b/dev/alpha_console.hh
index be8538e505..4986d0e5f0 100644
--- a/dev/alpha_console.hh
+++ b/dev/alpha_console.hh
@@ -38,6 +38,7 @@
 #include "dev/io_device.hh"
 #include "sim/host.hh"
 #include "dev/tsunami_io.hh"
+#include "sim/sim_object.hh"
 
 class BaseCPU;
 class SimConsole;
@@ -90,7 +91,7 @@ class AlphaConsole : public PioDevice
   public:
     /** Standard Constructor */
     AlphaConsole(const std::string &name, SimConsole *cons, SimpleDisk *d,
-                 System *system, BaseCPU *cpu, TsunamiIO *clock,
+                 System *system, BaseCPU *cpu, SimObject *clock,
                  int num_cpus, MemoryController *mmu, Addr addr,
                  HierParams *hier, Bus *bus);
 
diff --git a/sim/sim_object.cc b/sim/sim_object.cc
index c55021e41a..2ec588afac 100644
--- a/sim/sim_object.cc
+++ b/sim/sim_object.cc
@@ -36,6 +36,7 @@
 #include "sim/host.hh"
 #include "sim/sim_object.hh"
 #include "sim/sim_stats.hh"
+#include "sim/param.hh"
 
 using namespace std;
 
@@ -191,3 +192,5 @@ SimObject::serializeAll(ostream &os)
         obj->serialize(os);
    }
 }
+
+DEFINE_SIM_OBJECT_CLASS_NAME("SimObject", SimObject)