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Some API changes, lots of test changes.
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Seth J. Morabito committed
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@@ -2,15 +2,14 @@ package com.loomcom.symon;
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import com.loomcom.symon.devices.Memory;
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import com.loomcom.symon.exceptions.MemoryRangeException;
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import junit.framework.TestCase;
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import junit.framework.*;
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public class CpuImmediateModeTests extends TestCase {
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private Cpu cpu;
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private Bus bus;
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private Memory mem;
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protected Cpu cpu;
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protected Bus bus;
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protected Memory mem;
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public void setUp() throws MemoryRangeException {
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this.cpu = new Cpu();
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this.bus = new Bus(0x0000, 0xffff);
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@@ -18,71 +17,62 @@ public class CpuImmediateModeTests extends TestCase {
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bus.addCpu(cpu);
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bus.addDevice(mem);
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// All test programs start at 0x0200;
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bus.write(0xfffc, 0x00);
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bus.write(0xfffd, 0x02);
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// Load the reset vector.
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bus.write(0xfffc, Cpu.DEFAULT_BASE_ADDRESS & 0x00ff);
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bus.write(0xfffd, (Cpu.DEFAULT_BASE_ADDRESS & 0xff00)>>>8);
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cpu.reset();
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}
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/* ORA Immediate Mode Tests - 0x09 */
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public void test_ORA_SetsAccumulator() {
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bus.write(0x0200, 0x09); // ORA #$00
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bus.write(0x0201, 0x00);
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bus.loadProgram(0x09, 0x00, // ORA #$00
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0x09, 0x11, // ORA #$11
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0x09, 0x22, // ORA #$22
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0x09, 0x44, // ORA #$44
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0x09, 0x88); // ORA #$88
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cpu.step();
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// 0x00 | 0x00 == 0x00
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assertEquals(0x00, cpu.getAccumulator());
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bus.write(0x0202, 0x09); // ORA #$11
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bus.write(0x0203, 0x11);
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cpu.step();
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// 0x00 | 0x11 == 0x11
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assertEquals(0x11, cpu.getAccumulator());
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bus.write(0x0204, 0x09); // ORA #$22
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bus.write(0x0205, 0x22);
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cpu.step();
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// 0x11 | 0x22 == 0x33
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assertEquals(0x33, cpu.getAccumulator());
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bus.write(0x0206, 0x09); // ORA #$44
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bus.write(0x0207, 0x44);
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cpu.step();
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// 0x33 | 0x44 == 0x77
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assertEquals(0x77, cpu.getAccumulator());
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bus.write(0x0208, 0x09); // ORA #$88
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bus.write(0x0209, 0x88);
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cpu.step();
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// 0x77 | 0x88 == 0xFF
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assertEquals(0xff, cpu.getAccumulator());
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}
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public void test_ORA_SetsZeroFlagIfResultIsZero() {
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bus.write(0x0200, 0x09); // ORA #$00
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bus.write(0x0201, 0x00);
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bus.loadProgram(0x09, 0x00); // ORA #$00
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cpu.step();
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assertTrue(cpu.getZeroFlag());
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}
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public void test_ORA_DoesNotSetZeroFlagIfResultNotZero() {
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bus.write(0x0200, 0x09); // ORA #$01
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bus.write(0x0201, 0x01);
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bus.loadProgram(0x09, 0x01); // ORA #$01
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cpu.step();
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assertFalse(cpu.getZeroFlag());
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}
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public void test_ORA_SetsNegativeFlagIfResultIsNegative() {
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bus.write(0x0200, 0x09); // ORA #$80
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bus.write(0x0201, 0x80);
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bus.loadProgram(0x09, 0x80); // ORA #$80
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cpu.step();
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assertTrue(cpu.getNegativeFlag());
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}
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public void test_ORA_DoesNotSetNegativeFlagIfResultNotNegative() {
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bus.write(0x0200, 0x09); // ORA #$7F
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bus.write(0x0201, 0x7f);
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bus.loadProgram(0x09, 0x7f); // ORA #$7F
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cpu.step();
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assertFalse(cpu.getNegativeFlag());
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}
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@@ -138,58 +128,57 @@ public class CpuImmediateModeTests extends TestCase {
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}
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public void test_AND_DoesNotSetZeroFlagIfResultNotZero() {
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bus.write(0x0200, 0xa9); // LDA #$88
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bus.write(0x0201, 0x88);
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cpu.step();
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bus.write(0x0202, 0x29); // AND #$f1
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bus.write(0x0203, 0xf1);
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cpu.step();
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bus.loadProgram(0xa9, 0x88, // LDA #$88
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0x29, 0xf1); // AND #$F1
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cpu.step(2);
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assertFalse(cpu.getZeroFlag());
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}
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public void test_AND_SetsNegativeFlagIfResultIsNegative() {
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bus.write(0x0200, 0xa9); // LDA #$88
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bus.write(0x0201, 0x88);
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cpu.step();
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bus.write(0x0202, 0x29); // AND #$F0
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bus.write(0x0203, 0xf0);
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cpu.step();
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bus.loadProgram(0xa9, 0x88, // LDA #$88
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0x29, 0xf0); // AND #$F0
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cpu.step(2);
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assertTrue(cpu.getNegativeFlag());
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}
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public void test_AND_DoesNotSetNegativeFlagIfResultNotNegative() {
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bus.write(0x0200, 0xa9); // LDA #$88
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bus.write(0x0201, 0x88);
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cpu.step();
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bus.write(0x0202, 0x29); // AND #$0F
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bus.write(0x0203, 0x0f);
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cpu.step();
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bus.loadProgram(0xa9, 0x88, // LDA #$88
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0x29, 0x0f); // AND #$0F
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cpu.step(2);
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assertFalse(cpu.getNegativeFlag());
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}
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/* EOR Immediate Mode Tests - 0x49 */
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public void test_EOR_SetsAccumulator() {
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bus.write(0x0200, 0xa9); // LDA #$88
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bus.write(0x0201, 0x88);
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bus.loadProgram(0xa9, 0x88, // LDA #$88
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0x49, 0x00, // EOR #$00
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0x49, 0xff, // EOR #$ff
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0x49, 0x33); // EOR #$33
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cpu.step();
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bus.write(0x0202, 0x49); // EOR #$00
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bus.write(0x0203, 0x00);
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cpu.step();
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assertEquals(0x88, cpu.getAccumulator());
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bus.write(0x0204, 0x49); // EOR #$ff
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bus.write(0x0205, 0xff);
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cpu.step();
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assertEquals(0x77, cpu.getAccumulator());
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bus.write(0x0206, 0x49); // EOR #$33
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bus.write(0x0207, 0x33);
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cpu.step();
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assertEquals(0x44, cpu.getAccumulator());
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}
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public void test_EOR_SetsArithmeticFlags() {
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bus.loadProgram(0xa9, 0x77, // LDA #$77
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0x49, 0x77, // EOR #$77
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0x49, 0xff); // EOR #$ff
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cpu.step();
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cpu.step();
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assertEquals(0x00, cpu.getAccumulator());
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assertTrue(cpu.getZeroFlag());
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assertFalse(cpu.getNegativeFlag());
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cpu.step();
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assertEquals(0xff, cpu.getAccumulator());
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assertFalse(cpu.getZeroFlag());
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assertTrue(cpu.getNegativeFlag());
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}
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/* ADC Immediate Mode Tests - 0x69 */
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public void test_ADC_SetsAccumulator() {
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@@ -222,7 +211,7 @@ public class CpuImmediateModeTests extends TestCase {
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assertEquals(0x02, cpu.getAccumulator());
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}
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public void test_ADC_SetsCarryIfResultOverflows() {
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public void test_ADC_SetsCarryIfResultCarries() {
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bus.write(0x200, 0xa9); // LDA #$fe
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bus.write(0x201, 0xff);
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cpu.step();
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@@ -231,7 +220,9 @@ public class CpuImmediateModeTests extends TestCase {
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cpu.step();
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// $ff + $02 = $101 = [c] + $01
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assertEquals(0x01, cpu.getAccumulator());
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assertFalse(cpu.getZeroFlag());
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assertTrue(cpu.getCarryFlag());
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assertFalse(cpu.getOverflowFlag());
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}
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public void test_ADC_SetsOverflowIfResultChangesSign() {
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@@ -242,7 +233,51 @@ public class CpuImmediateModeTests extends TestCase {
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bus.write(0x203, 0x01);
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cpu.step();
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assertEquals(0x80, cpu.getAccumulator());
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assertFalse(cpu.getZeroFlag());
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assertFalse(cpu.getCarryFlag());
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assertTrue(cpu.getOverflowFlag());
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cpu.reset();
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bus.write(0x200, 0xa9); // LDA #$80
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bus.write(0x201, 0x80);
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cpu.step();
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bus.write(0x202, 0x69); // ADC #$ff
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bus.write(0x203, 0xff);
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cpu.step();
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assertEquals(0x7f, cpu.getAccumulator());
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assertFalse(cpu.getZeroFlag());
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assertTrue(cpu.getCarryFlag());
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assertFalse(cpu.getNegativeFlag());
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assertTrue(cpu.getOverflowFlag());
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}
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public void test_ADC_DoesNotSetOverflowIfNotNeeded() {
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bus.write(0x200, 0xa9); // LDA #$ff
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bus.write(0x201, 0xff);
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cpu.step();
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bus.write(0x202, 0x69); // ADC #$01
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bus.write(0x203, 0x01);
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cpu.step();
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assertEquals(0x00, cpu.getAccumulator());
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assertTrue(cpu.getZeroFlag());
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assertTrue(cpu.getCarryFlag());
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assertFalse(cpu.getNegativeFlag());
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assertFalse(cpu.getOverflowFlag());
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cpu.reset();
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bus.write(0x200, 0xa9); // LDA #$01
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bus.write(0x201, 0x01);
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cpu.step();
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bus.write(0x202, 0x69); // ADC #$01
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bus.write(0x203, 0x01);
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cpu.step();
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assertEquals(0x02, cpu.getAccumulator());
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assertFalse(cpu.getZeroFlag());
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assertFalse(cpu.getCarryFlag());
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assertFalse(cpu.getNegativeFlag());
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assertFalse(cpu.getOverflowFlag());
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}
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public void test_ADC_SetsNegativeFlagIfResultIsNegative() {
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@@ -253,9 +288,12 @@ public class CpuImmediateModeTests extends TestCase {
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bus.write(0x203, 0x01);
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cpu.step();
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assertEquals(0x80, cpu.getAccumulator());
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assertTrue(cpu.getNegativeFlag());
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assertFalse(cpu.getZeroFlag());
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assertFalse(cpu.getCarryFlag());
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assertTrue(cpu.getNegativeFlag());
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assertTrue(cpu.getOverflowFlag());
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}
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public void test_ADC_SetsZeroFlagIfResultIsZero() {
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bus.write(0x200, 0xa9); // LDA #$ff
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bus.write(0x201, 0xff);
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@@ -264,7 +302,10 @@ public class CpuImmediateModeTests extends TestCase {
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bus.write(0x203, 0x01);
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cpu.step();
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assertEquals(0x00, cpu.getAccumulator());
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assertTrue(cpu.getZeroFlag());
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assertTrue(cpu.getZeroFlag());
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assertTrue(cpu.getCarryFlag());
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assertFalse(cpu.getNegativeFlag());
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assertFalse(cpu.getOverflowFlag());
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}
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public void test_ADC_DoesNotSetNegativeFlagIfResultNotNegative() {
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@@ -275,7 +316,10 @@ public class CpuImmediateModeTests extends TestCase {
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bus.write(0x203, 0x01);
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cpu.step();
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assertEquals(0x7f, cpu.getAccumulator());
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assertFalse(cpu.getZeroFlag());
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assertFalse(cpu.getCarryFlag());
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assertFalse(cpu.getNegativeFlag());
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assertFalse(cpu.getOverflowFlag());
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}
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public void test_ADC_DoesNotSetZeroFlagIfResultNotZero() {
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@@ -286,7 +330,10 @@ public class CpuImmediateModeTests extends TestCase {
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bus.write(0x203, 0x03);
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cpu.step();
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assertEquals(0x2, cpu.getAccumulator());
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assertFalse(cpu.getZeroFlag());
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assertFalse(cpu.getZeroFlag());
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assertTrue(cpu.getCarryFlag());
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assertFalse(cpu.getNegativeFlag());
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assertFalse(cpu.getOverflowFlag());
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}
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/* LDY Immediate Mode Tests - 0xa0 */
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