diff --git a/src/computer.c b/src/computer.c
index 577d21e..2f8faa9 100644
--- a/src/computer.c
+++ b/src/computer.c
@@ -4,16 +4,72 @@
 #include <string.h>
 
 nn_computer *nn_newComputer(nn_universe *universe, nn_address address, nn_architecture *arch, void *userdata, size_t memoryLimit, size_t componentLimit);
-void nn_tickComputer(nn_computer *computer);
-double nn_getUptime(nn_computer *computer);
-size_t nn_getComputerMemoryUsed(nn_computer *computer);
-size_t nn_getComputerMemoryTotal(nn_computer *computer);
-void *nn_getComputerUserData(nn_computer *computer);
-void nn_addSupportedArchitecture(nn_computer *computer, nn_architecture *arch);
-nn_architecture *nn_getArchitecture(nn_computer *computer);
-nn_architecture *nn_getNextArchitecture(nn_computer *computer);
-void nn_setNextArchitecture(nn_computer *computer, nn_architecture *arch);
-void nn_deleteComputer(nn_computer *computer);
+
+void nn_setTmpAddress(nn_computer *computer, nn_address tmp) {
+    nn_free(computer->tmpAddress);
+    computer->tmpAddress = nn_strdup(tmp);
+}
+
+nn_address nn_getComputerAddress(nn_computer *computer) {
+    return computer->tmpAddress;
+}
+
+int nn_tickComputer(nn_computer *computer) {
+    nn_clearError(computer);
+    computer->arch->tick(computer, computer->archState, computer->arch->userdata);
+    return nn_getState(computer);
+}
+
+double nn_getUptime(nn_computer *computer) {
+    return nn_getTime(computer->universe) - computer->timeOffset;
+}
+
+size_t nn_getComputerMemoryUsed(nn_computer *computer) {
+    return computer->arch->getMemoryUsage(computer, computer->archState, computer->arch->userdata);
+}
+
+size_t nn_getComputerMemoryTotal(nn_computer *computer) {
+    return computer->memoryTotal;
+}
+
+void *nn_getComputerUserData(nn_computer *computer) {
+    return computer->userdata;
+}
+
+void nn_addSupportedArchitecture(nn_computer *computer, nn_architecture *arch) {
+    if(computer->supportedArchCount == NN_MAX_ARCHITECTURES) return;
+    computer->supportedArch[computer->supportedArchCount] = arch;
+    computer->supportedArchCount++;
+}
+
+nn_architecture *nn_getArchitecture(nn_computer *computer) {
+    return computer->arch;
+}
+
+nn_architecture *nn_getNextArchitecture(nn_computer *computer) {
+    return computer->nextArch;
+}
+
+void nn_setNextArchitecture(nn_computer *computer, nn_architecture *arch) {
+    computer->nextArch = arch;
+}
+
+void nn_deleteComputer(nn_computer *computer) {
+    nn_clearError(computer);
+    nn_resetCall(computer);
+    while(computer->signalCount > 0) {
+        nn_popSignal(computer);
+    }
+    for(size_t i = 0; i < computer->userCount; i++) {
+        nn_free(computer->users[i]);
+    }
+    computer->arch->teardown(computer, computer->archState, computer->arch->userdata);
+    nn_deleteGuard(computer->lock);
+    nn_free(computer->components);
+    nn_free(computer->address);
+    nn_free(computer->tmpAddress);
+    nn_free(computer);
+}
 
 const char *nn_pushSignal(nn_computer *computer, nn_value *values, size_t len) {
     if(len > NN_MAX_SIGNAL_VALS) return "too many values";
@@ -221,3 +277,19 @@ size_t nn_getArgumentCount(nn_computer *computer) {
 size_t nn_getReturnCount(nn_computer *computer) {
     return computer->retc;
 }
+
+char *nn_serializeProgram(nn_computer *computer) {
+    return computer->arch->serialize(computer, computer->archState, computer->arch->userdata);
+}
+
+void nn_deserializeProgram(nn_computer *computer, char *memory) {
+    computer->arch->deserialize(computer, memory, computer->archState, computer->arch->userdata);
+}
+
+void nn_lockComputer(nn_computer *computer) {
+    nn_lock(computer->lock);
+}
+
+void nn_unlockComputer(nn_computer *computer) {
+    nn_unlock(computer->lock);
+}
diff --git a/src/computer.h b/src/computer.h
index af11856..a9322e4 100644
--- a/src/computer.h
+++ b/src/computer.h
@@ -12,6 +12,7 @@ typedef struct nn_computer {
     char state;
     bool allocatedError;
     char *err;
+    void *userdata;
     nn_guard *lock;
     nn_component *components;
     size_t componentLen;
@@ -21,8 +22,9 @@ typedef struct nn_computer {
     nn_value rets[NN_MAX_RETS];
     size_t retc;
     nn_architecture *arch;
+    void *archState;
     nn_architecture *nextArch;
-    nn_architecture supportedArch[NN_MAX_ARCHITECTURES];
+    nn_architecture *supportedArch[NN_MAX_ARCHITECTURES];
     size_t supportedArchCount;
     double timeOffset;
     nn_universe *universe;
@@ -32,6 +34,9 @@ typedef struct nn_computer {
     size_t maxEnergy;
     nn_signal signals[NN_MAX_SIGNALS];
     size_t signalCount;
+    size_t memoryTotal;
+    nn_address address;
+    nn_address tmpAddress;
 } nn_computer;
 
 #endif
diff --git a/src/neonucleus.h b/src/neonucleus.h
index f903ba2..6d1a94e 100644
--- a/src/neonucleus.h
+++ b/src/neonucleus.h
@@ -150,7 +150,7 @@ void nn_setClock(nn_universe *universe, nn_clock_t *clock, void *userdata);
 double nn_getTime(nn_universe *universe);
 
 nn_computer *nn_newComputer(nn_universe *universe, nn_address address, nn_architecture *arch, void *userdata, size_t memoryLimit, size_t componentLimit);
-void nn_tickComputer(nn_computer *computer);
+int nn_tickComputer(nn_computer *computer);
 double nn_getUptime(nn_computer *computer);
 size_t nn_getComputerMemoryUsed(nn_computer *computer);
 size_t nn_getComputerMemoryTotal(nn_computer *computer);
@@ -169,6 +169,13 @@ void nn_deleteUser(nn_computer *computer, const char *name);
 const char *nn_indexUser(nn_computer *computer, size_t idx);
 bool nn_isUser(nn_computer *computer, const char *name);
 
+/* The memory returned can be freed with nn_free() */
+char *nn_serializeProgram(nn_computer *computer);
+void nn_deserializeProgram(nn_computer *computer, char *memory);
+
+void nn_lockComputer(nn_computer *computer);
+void nn_unlockComputer(nn_computer *computer);
+
 /// This means the computer has not yet started.
 /// This is used to determine whether newComponent and removeComponent should emit signals.
 #define NN_STATE_SETUP 0
@@ -225,6 +232,8 @@ void nn_setCError(nn_computer *computer, const char *err);
 // Component stuff
 
 nn_component *nn_newComponent(nn_computer *computer, nn_address address, int slot, nn_componentTable *table, void *userdata);
+void nn_setTmpAddress(nn_computer *computer, nn_address tmp);
+nn_address nn_getComputerAddress(nn_computer *computer);
 void nn_removeComponent(nn_computer *computer, nn_address address);
 void nn_destroyComponent(nn_component *component);
 nn_computer *nn_getComputerOfComponent(nn_component *component);