RuiFPB/ksymon
1
0 Fork 0
forked from public_mirrors/symon
Code Pull Requests Actions Releases 2 Activity

Some API changes, lots of test changes.

Browse Source
This commit is contained in:
Seth J. Morabito committed 2008-12-14 23:43:04 -08:00
1 parent 6443cacdb9
commit 1bd59b048b
4 files changed
+167 -98
Download Patch File Download Diff File Expand all files Collapse all files

No files matched your search

src/test/java/com/loomcom/symon/CpuImmediateModeTests.java
+110 -63
View File
@@ -2,15 +2,14 @@ package com.loomcom.symon;
import com.loomcom.symon.devices.Memory;
import com.loomcom.symon.exceptions.MemoryRangeException;
import junit.framework.TestCase;
import junit.framework.*;
public class CpuImmediateModeTests extends TestCase {
private Cpu cpu;
private Bus bus;
private Memory mem;
protected Cpu cpu;
protected Bus bus;
protected Memory mem;
public void setUp() throws MemoryRangeException {
this.cpu = new Cpu();
this.bus = new Bus(0x0000, 0xffff);
@@ -18,71 +17,62 @@ public class CpuImmediateModeTests extends TestCase {
bus.addCpu(cpu);
bus.addDevice(mem);
// All test programs start at 0x0200;
bus.write(0xfffc, 0x00);
bus.write(0xfffd, 0x02);
// Load the reset vector.
bus.write(0xfffc, Cpu.DEFAULT_BASE_ADDRESS & 0x00ff);
bus.write(0xfffd, (Cpu.DEFAULT_BASE_ADDRESS & 0xff00)>>>8);
cpu.reset();
}
/* ORA Immediate Mode Tests - 0x09 */
public void test_ORA_SetsAccumulator() {
bus.write(0x0200, 0x09); // ORA #$00
bus.write(0x0201, 0x00);
bus.loadProgram(0x09, 0x00, // ORA #$00
0x09, 0x11, // ORA #$11
0x09, 0x22, // ORA #$22
0x09, 0x44, // ORA #$44
0x09, 0x88); // ORA #$88
cpu.step();
// 0x00 | 0x00 == 0x00
assertEquals(0x00, cpu.getAccumulator());
bus.write(0x0202, 0x09); // ORA #$11
bus.write(0x0203, 0x11);
cpu.step();
// 0x00 | 0x11 == 0x11
assertEquals(0x11, cpu.getAccumulator());
bus.write(0x0204, 0x09); // ORA #$22
bus.write(0x0205, 0x22);
cpu.step();
// 0x11 | 0x22 == 0x33
assertEquals(0x33, cpu.getAccumulator());
bus.write(0x0206, 0x09); // ORA #$44
bus.write(0x0207, 0x44);
cpu.step();
// 0x33 | 0x44 == 0x77
assertEquals(0x77, cpu.getAccumulator());
bus.write(0x0208, 0x09); // ORA #$88
bus.write(0x0209, 0x88);
cpu.step();
// 0x77 | 0x88 == 0xFF
assertEquals(0xff, cpu.getAccumulator());
}
public void test_ORA_SetsZeroFlagIfResultIsZero() {
bus.write(0x0200, 0x09); // ORA #$00
bus.write(0x0201, 0x00);
bus.loadProgram(0x09, 0x00); // ORA #$00
cpu.step();
assertTrue(cpu.getZeroFlag());
}
public void test_ORA_DoesNotSetZeroFlagIfResultNotZero() {
bus.write(0x0200, 0x09); // ORA #$01
bus.write(0x0201, 0x01);
bus.loadProgram(0x09, 0x01); // ORA #$01
cpu.step();
assertFalse(cpu.getZeroFlag());
}
public void test_ORA_SetsNegativeFlagIfResultIsNegative() {
bus.write(0x0200, 0x09); // ORA #$80
bus.write(0x0201, 0x80);
bus.loadProgram(0x09, 0x80); // ORA #$80
cpu.step();
assertTrue(cpu.getNegativeFlag());
}
public void test_ORA_DoesNotSetNegativeFlagIfResultNotNegative() {
bus.write(0x0200, 0x09); // ORA #$7F
bus.write(0x0201, 0x7f);
bus.loadProgram(0x09, 0x7f); // ORA #$7F
cpu.step();
assertFalse(cpu.getNegativeFlag());
}
@@ -138,58 +128,57 @@ public class CpuImmediateModeTests extends TestCase {
}
public void test_AND_DoesNotSetZeroFlagIfResultNotZero() {
bus.write(0x0200, 0xa9); // LDA #$88
bus.write(0x0201, 0x88);
cpu.step();
bus.write(0x0202, 0x29); // AND #$f1
bus.write(0x0203, 0xf1);
cpu.step();
bus.loadProgram(0xa9, 0x88, // LDA #$88
0x29, 0xf1); // AND #$F1
cpu.step(2);
assertFalse(cpu.getZeroFlag());
}
public void test_AND_SetsNegativeFlagIfResultIsNegative() {
bus.write(0x0200, 0xa9); // LDA #$88
bus.write(0x0201, 0x88);
cpu.step();
bus.write(0x0202, 0x29); // AND #$F0
bus.write(0x0203, 0xf0);
cpu.step();
bus.loadProgram(0xa9, 0x88, // LDA #$88
0x29, 0xf0); // AND #$F0
cpu.step(2);
assertTrue(cpu.getNegativeFlag());
}
public void test_AND_DoesNotSetNegativeFlagIfResultNotNegative() {
bus.write(0x0200, 0xa9); // LDA #$88
bus.write(0x0201, 0x88);
cpu.step();
bus.write(0x0202, 0x29); // AND #$0F
bus.write(0x0203, 0x0f);
cpu.step();
bus.loadProgram(0xa9, 0x88, // LDA #$88
0x29, 0x0f); // AND #$0F
cpu.step(2);
assertFalse(cpu.getNegativeFlag());
}
/* EOR Immediate Mode Tests - 0x49 */
public void test_EOR_SetsAccumulator() {
bus.write(0x0200, 0xa9); // LDA #$88
bus.write(0x0201, 0x88);
bus.loadProgram(0xa9, 0x88, // LDA #$88
0x49, 0x00, // EOR #$00
0x49, 0xff, // EOR #$ff
0x49, 0x33); // EOR #$33
cpu.step();
bus.write(0x0202, 0x49); // EOR #$00
bus.write(0x0203, 0x00);
cpu.step();
assertEquals(0x88, cpu.getAccumulator());
bus.write(0x0204, 0x49); // EOR #$ff
bus.write(0x0205, 0xff);
cpu.step();
assertEquals(0x77, cpu.getAccumulator());
bus.write(0x0206, 0x49); // EOR #$33
bus.write(0x0207, 0x33);
cpu.step();
assertEquals(0x44, cpu.getAccumulator());
}
public void test_EOR_SetsArithmeticFlags() {
bus.loadProgram(0xa9, 0x77, // LDA #$77
0x49, 0x77, // EOR #$77
0x49, 0xff); // EOR #$ff
cpu.step();
cpu.step();
assertEquals(0x00, cpu.getAccumulator());
assertTrue(cpu.getZeroFlag());
assertFalse(cpu.getNegativeFlag());
cpu.step();
assertEquals(0xff, cpu.getAccumulator());
assertFalse(cpu.getZeroFlag());
assertTrue(cpu.getNegativeFlag());
}
/* ADC Immediate Mode Tests - 0x69 */
public void test_ADC_SetsAccumulator() {
@@ -222,7 +211,7 @@ public class CpuImmediateModeTests extends TestCase {
assertEquals(0x02, cpu.getAccumulator());
}
public void test_ADC_SetsCarryIfResultOverflows() {
public void test_ADC_SetsCarryIfResultCarries() {
bus.write(0x200, 0xa9); // LDA #$fe
bus.write(0x201, 0xff);
cpu.step();
@@ -231,7 +220,9 @@ public class CpuImmediateModeTests extends TestCase {
cpu.step();
// $ff + $02 = $101 = [c] + $01
assertEquals(0x01, cpu.getAccumulator());
assertFalse(cpu.getZeroFlag());
assertTrue(cpu.getCarryFlag());
assertFalse(cpu.getOverflowFlag());
}
public void test_ADC_SetsOverflowIfResultChangesSign() {
@@ -242,7 +233,51 @@ public class CpuImmediateModeTests extends TestCase {
bus.write(0x203, 0x01);
cpu.step();
assertEquals(0x80, cpu.getAccumulator());
assertFalse(cpu.getZeroFlag());
assertFalse(cpu.getCarryFlag());
assertTrue(cpu.getOverflowFlag());
cpu.reset();
bus.write(0x200, 0xa9); // LDA #$80
bus.write(0x201, 0x80);
cpu.step();
bus.write(0x202, 0x69); // ADC #$ff
bus.write(0x203, 0xff);
cpu.step();
assertEquals(0x7f, cpu.getAccumulator());
assertFalse(cpu.getZeroFlag());
assertTrue(cpu.getCarryFlag());
assertFalse(cpu.getNegativeFlag());
assertTrue(cpu.getOverflowFlag());
}
public void test_ADC_DoesNotSetOverflowIfNotNeeded() {
bus.write(0x200, 0xa9); // LDA #$ff
bus.write(0x201, 0xff);
cpu.step();
bus.write(0x202, 0x69); // ADC #$01
bus.write(0x203, 0x01);
cpu.step();
assertEquals(0x00, cpu.getAccumulator());
assertTrue(cpu.getZeroFlag());
assertTrue(cpu.getCarryFlag());
assertFalse(cpu.getNegativeFlag());
assertFalse(cpu.getOverflowFlag());
cpu.reset();
bus.write(0x200, 0xa9); // LDA #$01
bus.write(0x201, 0x01);
cpu.step();
bus.write(0x202, 0x69); // ADC #$01
bus.write(0x203, 0x01);
cpu.step();
assertEquals(0x02, cpu.getAccumulator());
assertFalse(cpu.getZeroFlag());
assertFalse(cpu.getCarryFlag());
assertFalse(cpu.getNegativeFlag());
assertFalse(cpu.getOverflowFlag());
}
public void test_ADC_SetsNegativeFlagIfResultIsNegative() {
@@ -253,9 +288,12 @@ public class CpuImmediateModeTests extends TestCase {
bus.write(0x203, 0x01);
cpu.step();
assertEquals(0x80, cpu.getAccumulator());
assertTrue(cpu.getNegativeFlag());
assertFalse(cpu.getZeroFlag());
assertFalse(cpu.getCarryFlag());
assertTrue(cpu.getNegativeFlag());
assertTrue(cpu.getOverflowFlag());
}
public void test_ADC_SetsZeroFlagIfResultIsZero() {
bus.write(0x200, 0xa9); // LDA #$ff
bus.write(0x201, 0xff);
@@ -264,7 +302,10 @@ public class CpuImmediateModeTests extends TestCase {
bus.write(0x203, 0x01);
cpu.step();
assertEquals(0x00, cpu.getAccumulator());
assertTrue(cpu.getZeroFlag());
assertTrue(cpu.getZeroFlag());
assertTrue(cpu.getCarryFlag());
assertFalse(cpu.getNegativeFlag());
assertFalse(cpu.getOverflowFlag());
}
public void test_ADC_DoesNotSetNegativeFlagIfResultNotNegative() {
@@ -275,7 +316,10 @@ public class CpuImmediateModeTests extends TestCase {
bus.write(0x203, 0x01);
cpu.step();
assertEquals(0x7f, cpu.getAccumulator());
assertFalse(cpu.getZeroFlag());
assertFalse(cpu.getCarryFlag());
assertFalse(cpu.getNegativeFlag());
assertFalse(cpu.getOverflowFlag());
}
public void test_ADC_DoesNotSetZeroFlagIfResultNotZero() {
@@ -286,7 +330,10 @@ public class CpuImmediateModeTests extends TestCase {
bus.write(0x203, 0x03);
cpu.step();
assertEquals(0x2, cpu.getAccumulator());
assertFalse(cpu.getZeroFlag());
assertFalse(cpu.getZeroFlag());
assertTrue(cpu.getCarryFlag());
assertFalse(cpu.getNegativeFlag());
assertFalse(cpu.getOverflowFlag());
}
/* LDY Immediate Mode Tests - 0xa0 */