Started skeleton of Zero Page tests.

src/test/java/com/loomcom/symon/CpuZeroPageModeTest.java

@@ -0,0 +1,74 @@
+package com.loomcom.symon;
+
+import com.loomcom.symon.devices.Memory;
+import com.loomcom.symon.exceptions.MemoryRangeException;
+import junit.framework.TestCase;
+
+public class CpuZeroPageModeTest extends TestCase {
+
+	protected Cpu cpu;
+	protected Bus bus;
+	protected Memory mem;
+
+	protected void setUp() throws Exception {
+		this.cpu = new Cpu();
+		this.bus = new Bus(0x0000, 0xffff);
+		this.mem = new Memory(0x0000, 0x10000);
+		bus.addCpu(cpu);
+		bus.addDevice(mem);
+
+		// Load the reset vector.
+		bus.write(0xfffc, Cpu.DEFAULT_BASE_ADDRESS & 0x00ff);
+		bus.write(0xfffd, (Cpu.DEFAULT_BASE_ADDRESS & 0xff00)>>>8);
+
+		cpu.reset();
+		// Assert initial state
+		assertEquals(0, cpu.getAccumulator());
+		assertEquals(0, cpu.getXRegister());
+		assertEquals(0, cpu.getYRegister());
+		assertEquals(0x200, cpu.getProgramCounter());
+		assertEquals(0xff, cpu.getStackPointer());
+		assertEquals(0x20, cpu.getProcessorStatus());
+	}
+
+	/*
+	 * The following opcodes are tested for correctness in this file:
+	 *
+	 * ADC - $65
+	 * AND - $25
+	 * ASL - $06
+	 * BIT - $24
+	 * CMP - $c5
+	 * 
+	 * CPX - $e4
+	 * CPY - $c4
+	 * DEC - $c6
+	 * EOR - $45
+	 * INC - $e6
+	 * 
+	 * LDA - $a5
+	 * LDX - $a6
+	 * LDY - $a4
+	 * LSR - $46
+	 * ORA - $05
+	 * 
+	 * ROL - $26
+	 * ROR - $66
+	 * SBC - $e5
+	 * STA - $85
+	 * STX - $86
+	 * 
+	 * STY - $84
+	 * 
+	 */
+	
+	/* ADC - Add with Carry - $88 */
+	public void test_ADC() {
+		
+	}
+	
+	/* AND - Logical AND - $25 */
+	public void test_AND() {
+		
+	}
+}