Atleast its trying to read from the bus

src/main/java/net/brokenmoon/redcontrol/api/RCBus.java

@@ -20,29 +20,20 @@ public class RCBus extends Bus {
     private World backupWorld;
     private BlockPos backupPos;
 
-    public RCBus(RedBus redBus, World world, BlockPos pos) {
-        super(redBus);
-        this.redBus = redBus;
-        backupWorld = world;
-        backupPos = pos;
-    }
+
 
     public void write(int address, int data, World world, BlockPos pos) {
         if(isValid) {
-            getRedBus().write(address, data);
+            Device device = findDevice(address);
+            device.write(address - device.startAddress(), data);
         } else {
             generateBusWithWrite(address, data, world, pos);
         }
     }
 
+    @Override
     public void write(int address, int data) {
-        Device device = findDevice(address);
-        device.write(address - device.startAddress(), data);
-    }
-
-    public int read(int address, boolean cpuAccess) {
-        Device device = findDevice(address);
-        return device.read(address - device.startAddress(), cpuAccess) & 0xff;
+        write(address, data, backupWorld, backupPos);
     }
 
     private void generateBusWithWrite(int address, int data, World world, BlockPos pos) {
@@ -51,8 +42,8 @@ public class RCBus extends Bus {
 
     public int read(int address, boolean cpuAccess, World world, BlockPos pos) {
         if(isValid) {
-            RedControl.LOGGER.info("Reading! " + address  + " " + cpuAccess);
-            return getRedBus().read(address, cpuAccess) & 0xff;
+            Device device = findDevice(address);
+            return device.read(address - device.startAddress(), cpuAccess) & 0xff;
         } else {
             return generateBusWithRead(address, cpuAccess, world, pos);
         }
@@ -61,29 +52,20 @@ public class RCBus extends Bus {
     private int generateBusWithRead(int address, boolean cpuAccess, World world, BlockPos pos) {
         return ((NetworkCarrier)(world.getBlockState(pos).getBlock())).generateBusWithRead(world, pos, address, cpuAccess);
     }
-    @Override
-    protected Device findDevice(int address) {
-        // RedBus takes priority
-        if (this.redBus.inRange(address)) {
-            return this.redBus;
-        }
-        int idx = Arrays.binarySearch(this.boundaries, address);
-        if (idx < 0) {
-            idx = -idx - 2;
-        }
-        return this.devices.get(idx);
-    }
-
-    @Override
-    public void write(int address, int data) {
-        write(address, data, backupWorld, backupPos);
-    }
 
     @Override
     public int read(int address, boolean cpuAccess) {
         return read(address, cpuAccess, backupWorld, backupPos);
     }
 
+    public RCBus(RedBus redBus, World world, BlockPos pos) {
+        super(redBus);
+        this.redBus = redBus;
+        backupWorld = world;
+        backupPos = pos;
+    }
+
+
     public void generateBus(World world, BlockPos pos){
         ((NetworkCarrier)(world.getBlockState(pos).getBlock())).generateBus(world, pos);
     }
@@ -101,11 +83,7 @@ public class RCBus extends Bus {
         this.getRedBus().updatePeripheral();
     }
 
-    public boolean getValid(){
-        return this.isValid;
-    }
-
-    public void setValid(boolean validity){
-        this.isValid = validity;
+    public void setValid(boolean val){
+        this.isValid = val;
     }
 }

src/main/java/net/brokenmoon/redcontrol/api/RCCpu.java

@@ -3,6 +3,7 @@ package net.brokenmoon.redcontrol.api;
 import com.simon816.j65el02.Bus;
 import com.simon816.j65el02.Cpu;
 import com.simon816.j65el02.CpuState;
+import com.simon816.j65el02.device.Memory;
 import net.brokenmoon.redcontrol.RedControl;
 import net.brokenmoon.redcontrol.blockentities.CpuEntity;
 import net.minecraft.util.math.BlockPos;
@@ -11,6 +12,7 @@ import net.minecraft.world.World;
 public class RCCpu extends Cpu {
 
     private CpuEntity cpuEntity;
+    private Memory ram = new Memory(0x0000, 0x2000);;
 
     public RCCpu(CpuEntity cpuEntity) {
         this.cpuEntity = cpuEntity;
@@ -34,4 +36,15 @@ public class RCCpu extends Cpu {
             this.cpuEntity.getBus().getRedBus().write(address + 1, value >>> 8);
         }
     }
+
+    @Override
+    public void setBus(Bus bus) {
+        super.setBus(bus);
+        if(!cpuEntity.notTicked)
+            getBus().addDevice(this.ram);
+    }
+
+    public Memory getRam() {
+        return ram;
+    }
 }

src/main/java/net/brokenmoon/redcontrol/blockentities/CpuEntity.java

@@ -15,11 +15,12 @@ import java.nio.file.Paths;
 public class CpuEntity extends Peripheral{
     public int i = 0;
 
-    boolean notTicked = true;
+    public boolean notTicked = true;
     public RCCpu cpu;
     private RCBus rcbus;
     private Path bootloader;
 
+
     {
         bootloader = Paths.get("/home/astoria/code/java/mods/RedControl/src/main/resources/assets/redcontrol/image/rpcboot.bin");
     }
@@ -35,16 +36,14 @@ public class CpuEntity extends Peripheral{
     public static void tick(World world, BlockPos pos, BlockState state, CpuEntity be) {
         if(be.notTicked) {
             be.cpu = new RCCpu(be);
-            be.setRCBus(new RCBus(new RedBus(), world, pos));
-            be.cpu.setBus(be.getRCBus());
-            be.cpu.setBus(be.getRCBus());
-            Memory ram = new Memory(0x0000, 0x2000);
+            be.setBus(new RCBus(new RedBus(), world, pos));
+            be.cpu.setBus(be.getBus());
+            be.cpu.getBus().addDevice(be.cpu.getRam());
             try {
-                ram.loadFromFile(be.bootloader, 0x400, 0x100);
+                be.cpu.getRam().loadFromFile(be.bootloader, 0x400, 0x100);
             } catch (IOException e) {
                 throw new RuntimeException(e);
             }
-            be.cpu.getBus().addDevice(ram);
             be.reset();
             be.notTicked = false;
         }
@@ -56,15 +55,6 @@ public class CpuEntity extends Peripheral{
     }
 
 
-    public RCBus getRCBus(){
-        return this.rcbus;
-    }
-
-    public void setRCBus(RCBus bus){
-        this.rcbus = bus;
-    }
-
-
     public void setPeripheral(int id, RedBus.Peripheral peripheral) {
         this.getBus().getRedBus().setPeripheral(id, peripheral);
     }
@@ -89,8 +79,8 @@ public class CpuEntity extends Peripheral{
 
     public void reset() {
         this.cpu.reset();
-        this.getRCBus().write(0, this.defaultDriveId, getWorld(), this.getPos());
-        this.getRCBus().write(1, this.defaultMonitorId, getWorld(), this.getPos());
+        this.getBus().write(0, this.defaultDriveId, getWorld(), this.getPos());
+        this.getBus().write(1, this.defaultMonitorId, getWorld(), this.getPos());
     }
 
     public void step() {

src/main/java/net/brokenmoon/redcontrol/blockentities/Peripheral.java

@@ -1,6 +1,7 @@
 package net.brokenmoon.redcontrol.blockentities;
 
 import com.simon816.j65el02.Bus;
+import com.simon816.j65el02.device.Device;
 import com.simon816.j65el02.device.RedBus;
 import net.brokenmoon.redcontrol.api.RCBus;
 import net.minecraft.block.BlockState;
@@ -16,32 +17,25 @@ import net.minecraft.world.World;
 
 public abstract class Peripheral extends BlockEntity implements RedBus.Peripheral {
 
-    private RCBus bus;
+    protected RCBus bus;
+
+    protected int id;
 
-    private int id;
 
     public Peripheral(BlockEntityType<?> type, BlockPos pos, BlockState state, int id) {
         super(type, pos, state);
         this.id = id;
     }
 
-    public RCBus getBus() {
-        return bus;
+    public RCBus getBus(){
+        return this.bus;
     }
 
-    public void setBus(RCBus bus) {
+    public void setBus(RCBus bus){
         this.bus = bus;
     }
 
     public int getId() {
         return id;
     }
-
-    public void setId(int id) {
-        this.id = id;
-    }
-
-    public void onJoinBus() {
-        bus.getRedBus().setPeripheral(this.id, this);
-    }
 }

src/main/java/net/brokenmoon/redcontrol/blocks/NetworkCarrier.java

@@ -75,7 +75,6 @@ public abstract class NetworkCarrier extends BlockWithEntity implements BlockEnt
     private void replaceBus(RCBus bus, World world, BlockPos pos) {
         if(world.getBlockEntity(pos) instanceof Peripheral && ((Peripheral) world.getBlockEntity(pos)).getBus() != bus){
             ((Peripheral) world.getBlockEntity(pos)).setBus(bus);
-            ((Peripheral) world.getBlockEntity(pos)).onJoinBus();
             floodBus(bus, world, pos);
         }
     }