Renamed project to "Symon".

src/main/java/com/loomcom/symon/Simulator.java

@@ -0,0 +1,109 @@
+package com.loomcom.symon;
+
+import com.loomcom.symon.devices.*;
+import com.loomcom.symon.exceptions.*;
+
+/**
+ * Main control class for the J6502 Simulator.
+ */
+public class Simulator {
+
+	/**
+	 * Command-line parser used by this simulator.
+	 */
+	private CommandParser parser;
+
+	/**
+	 * The CPU itself.
+	 */
+	private Cpu cpu;
+
+	/**
+	 * The Bus responsible for routing memory read/write requests to the
+	 * correct IO devices.
+	 */
+	private Bus bus;
+
+	public Simulator() throws MemoryRangeException {
+		cpu = new Cpu();
+		bus = new Bus(0x0000, 0xffff);
+		bus.addCpu(cpu);
+		bus.addDevice(new Memory(0x0000, 0x10000));
+		parser = new CommandParser(System.in, System.out, this);
+	}
+
+	public void run() {
+		parser.run();
+	}
+
+	public void step() {
+	}
+
+	public int read(int address) {
+		return 0;
+	}
+
+	public void write(int address, int value) {
+	}
+	
+	/**
+	 * A test method.
+	 */
+	
+	public void runTest() {
+		
+		// Start at 0x0300
+		bus.write(0xfffc, 0x00);
+		bus.write(0xfffd, 0x03);
+		
+		bus.write(0x0300, 0xa9); // LDA #$FF
+		bus.write(0x0301, 0xff); 
+		bus.write(0x0302, 0xea); // NOP
+		bus.write(0x0303, 0xea); // NOP
+		bus.write(0x0304, 0xea); // NOP
+		bus.write(0x0305, 0xa0); // LDY #$1A
+		bus.write(0x0306, 0x1a);
+		bus.write(0x0307, 0xea); // NOP
+		bus.write(0x0308, 0xea); // NOP
+		bus.write(0x0309, 0xa2); // LDX #$90
+		bus.write(0x030a, 0x90);
+		
+		bus.write(0x030b, 0xea); // NOP
+		bus.write(0x030c, 0xea); // NOP
+		bus.write(0x030d, 0xea); // NOP
+
+		bus.write(0x030e, 0xa2); // LDX #$02
+		bus.write(0x030f, 0x02);
+
+		bus.write(0x0310, 0xa9); // LDA #$00
+		bus.write(0x0311, 0x00);
+		bus.write(0x0312, 0xa2); // LDX #$00
+		bus.write(0x0313, 0x00);
+		bus.write(0x0314, 0xa0); // LDY #$00
+		bus.write(0x0315, 0x00);
+		
+		bus.write(0x0316, 0x4c); // JMP #$0300
+		bus.write(0x0317, 0x00); 
+		bus.write(0x0318, 0x03);
+
+		cpu.reset();
+
+		for (int i = 0; i <= 40; i++) {
+			cpu.step();
+			System.out.println(cpu.toString());
+		}
+
+	}
+
+	/**
+	 * Main simulator routine.
+	 */
+	public static void main(String[] args) {
+		try {
+			new Simulator().runTest();
+		} catch (MemoryRangeException ex) {
+			System.err.println("Error: " + ex.toString());
+		}
+	}
+
+}