Fleshing out some of the interface for the CPU, Simulator, and Devices.

src/main/java/com/loomcom/j6502/Cpu.java

@@ -0,0 +1,52 @@
+package com.loomcom.j6502;
+
+/**
+ * Main 6502 CPU Simulation.
+ */
+public class Cpu {
+
+    /**
+     * The Address Decoder responsible for routing memory
+     * read/write requests to the correct IO devices.  Any
+     * simulated device can be 
+     */
+    AddressDecoder m_adc;
+
+    /**
+     * The Program Counter.
+     */
+    int m_pc;
+
+    /**
+     * The system stack pointer.
+     */
+    int m_sp;
+
+    /**
+     * The internal 
+     */
+
+    public Cpu() {
+	reset();
+    }
+
+    /**
+     * Reset the CPU to known initial values.
+     */
+    public void reset() {
+    }
+
+    /** 
+     * Trigger a maskable interrupt.
+     */
+    public void interrupt() {
+    }
+
+    /**
+     * Trigger a nonmaskable interrupt.
+     */
+    public void nmiInterrupt() {
+    }
+    
+}
+