RuiFPB/ksymon
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Implemented set/clear flag instructions. More tests, but SBC is still BROKEN.

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Seth J. Morabito committed 2008-12-20 02:00:45 -08:00
1 parent 088b0823e1
commit 46a5943736
2 files changed
+333 -245
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src/test/java/com/loomcom/symon/CpuImmediateModeTest.java
+132 -146
View File
@@ -159,147 +159,99 @@ public class CpuImmediateModeTest extends TestCase {
/* ADC Immediate Mode Tests - 0x69 */
public void test_ADC_SetsAccumulator() {
bus.loadProgram(0x69, 0x01, // ADC #$01
0x69, 0xa0, // ADC #$a0
0x69, 0x02, // ADC #$02
0x69, 0x06); // ADC #$06
cpu.step();
public void test_ADC() {
bus.loadProgram(0xa9, 0x00, // LDA #$00
0x69, 0x01); // ADC #$01
cpu.step(2);
assertEquals(0x01, cpu.getAccumulator());
assertFalse(cpu.getNegativeFlag());
assertFalse(cpu.getOverflowFlag());
assertFalse(cpu.getZeroFlag());
assertFalse(cpu.getCarryFlag());
cpu.step();
assertEquals(0xa1, cpu.getAccumulator());
cpu.reset();
bus.loadProgram(0xa9, 0x7f, // LDA #$7f
0x69, 0x01); // ADC #$01
cpu.step(2);
assertEquals(0x80, cpu.getAccumulator());
assertTrue(cpu.getNegativeFlag());
assertTrue(cpu.getOverflowFlag());
assertFalse(cpu.getZeroFlag());
assertFalse(cpu.getCarryFlag());
cpu.step();
assertEquals(0xa3, cpu.getAccumulator());
cpu.reset();
bus.loadProgram(0xa9, 0x80, // LDA #$80
0x69, 0x01); // ADC #$01
cpu.step(2);
assertEquals(0x81, cpu.getAccumulator());
assertTrue(cpu.getNegativeFlag());
assertFalse(cpu.getOverflowFlag());
assertFalse(cpu.getZeroFlag());
assertFalse(cpu.getCarryFlag());
cpu.step();
assertEquals(0xa9, cpu.getAccumulator());
cpu.reset();
bus.loadProgram(0xa9, 0xff, // LDA #$ff
0x69, 0x01); // ADC #$01
cpu.step(2);
assertEquals(0x00, cpu.getAccumulator());
assertFalse(cpu.getNegativeFlag());
assertFalse(cpu.getOverflowFlag());
assertTrue(cpu.getZeroFlag());
assertTrue(cpu.getCarryFlag());
cpu.reset();
bus.loadProgram(0xa9, 0x00, // LDA #$00
0x69, 0xff); // ADC #$ff
cpu.step(2);
assertEquals(0xff, cpu.getAccumulator());
assertTrue(cpu.getNegativeFlag());
assertFalse(cpu.getOverflowFlag());
assertFalse(cpu.getZeroFlag());
assertFalse(cpu.getCarryFlag());
cpu.reset();
bus.loadProgram(0xa9, 0x7f, // LDA #$7f
0x69, 0xff); // ADC #$ff
cpu.step(2);
assertEquals(0x7e, cpu.getAccumulator());
assertFalse(cpu.getNegativeFlag());
assertFalse(cpu.getOverflowFlag());
assertFalse(cpu.getZeroFlag());
assertTrue(cpu.getCarryFlag());
cpu.reset();
bus.loadProgram(0xa9, 0x80, // LDA #$80
0x69, 0xff); // ADC #$ff
cpu.step(2);
assertEquals(0x7f, cpu.getAccumulator());
assertFalse(cpu.getNegativeFlag());
assertTrue(cpu.getOverflowFlag());
assertFalse(cpu.getZeroFlag());
assertTrue(cpu.getCarryFlag());
cpu.reset();
bus.loadProgram(0xa9, 0xff, // LDA #$ff
0x69, 0xff); // ADC #$ff
cpu.step(2);
assertEquals(0xfe, cpu.getAccumulator());
assertTrue(cpu.getNegativeFlag());
assertFalse(cpu.getOverflowFlag());
assertFalse(cpu.getZeroFlag());
assertTrue(cpu.getCarryFlag());
}
public void test_ADC_IncludesCarry() {
cpu.setCarryFlag(true);
bus.loadProgram(0x69, 0x01); // ADC #$01
cpu.step();
bus.loadProgram(0xa9, 0x00, // LDA #$01
0x38, // SEC
0x69, 0x01); // ADC #$01
cpu.step(3);
assertEquals(0x02, cpu.getAccumulator());
}
public void test_ADC_SetsCarryIfResultCarries() {
bus.loadProgram(0xa9, 0xff, // LDA #$FE
0x69, 0x02);
cpu.step(2);
assertEquals(0x01, cpu.getAccumulator());
assertFalse(cpu.getZeroFlag());
assertTrue(cpu.getCarryFlag());
assertFalse(cpu.getNegativeFlag());
assertFalse(cpu.getOverflowFlag());
}
public void test_ADC_SetsOverflowIfResultChangesSign() {
bus.loadProgram(0xa9, 0x7f, // LDA #$7f
0x69, 0x01); // ADC #$01
cpu.step(2);
assertEquals(0x80, cpu.getAccumulator());
assertFalse(cpu.getZeroFlag());
assertFalse(cpu.getCarryFlag());
assertTrue(cpu.getOverflowFlag());
cpu.reset();
bus.loadProgram(0xa9, 0x80, // LDA #$80
0x69, 0xff); // ADC #$ff
cpu.step(2);
assertEquals(0x7f, cpu.getAccumulator());
assertFalse(cpu.getZeroFlag());
assertTrue(cpu.getCarryFlag());
assertFalse(cpu.getNegativeFlag());
assertTrue(cpu.getOverflowFlag());
}
public void test_ADC_DoesNotSetOverflowIfNotNeeded() {
bus.loadProgram(0xa9, 0xff, // LDA #$ff
0x69, 0x01); // ADC #$01
cpu.step(2);
assertEquals(0x00, cpu.getAccumulator());
assertTrue(cpu.getZeroFlag());
assertTrue(cpu.getCarryFlag());
assertFalse(cpu.getNegativeFlag());
assertFalse(cpu.getOverflowFlag());
cpu.reset();
bus.loadProgram(0xa9, 0x01, // LDA #$01
0x69, 0x01); // ADC #$01
cpu.step(2);
assertEquals(0x02, cpu.getAccumulator());
assertFalse(cpu.getZeroFlag());
assertFalse(cpu.getCarryFlag());
assertFalse(cpu.getNegativeFlag());
assertFalse(cpu.getOverflowFlag());
}
public void test_ADC_SetsNegativeFlagIfResultIsNegative() {
bus.loadProgram(0xa9, 0x7f, // LDA #$7F
0x69, 0x01); // ADC #$01
cpu.step(2);
assertEquals(0x80, cpu.getAccumulator());
assertFalse(cpu.getZeroFlag());
assertFalse(cpu.getCarryFlag());
assertTrue(cpu.getNegativeFlag());
assertTrue(cpu.getOverflowFlag());
}
public void test_ADC_SetsZeroFlagIfResultIsZero() {
bus.loadProgram(0xa9, 0xff, // LDA #$FF
0x69, 0x01); // ADC #$01
cpu.step(2);
assertEquals(0x00, cpu.getAccumulator());
assertTrue(cpu.getZeroFlag());
assertTrue(cpu.getCarryFlag());
assertFalse(cpu.getNegativeFlag());
assertFalse(cpu.getOverflowFlag());
}
public void test_ADC_DoesNotSetNegativeFlagIfResultNotNegative() {
bus.loadProgram(0xa9, 0x7e, // LDA #$7E
0x69, 0x01); // ADC #$01
cpu.step(2);
assertEquals(0x7f, cpu.getAccumulator());
assertFalse(cpu.getZeroFlag());
assertFalse(cpu.getCarryFlag());
assertFalse(cpu.getNegativeFlag());
assertFalse(cpu.getOverflowFlag());
}
public void test_ADC_DoesNotSetZeroFlagIfResultNotZero() {
bus.loadProgram(0xa9, 0xff, // LDA #$ff
0x69, 0x03); // ADC #$03
cpu.step(2);
assertEquals(0x2, cpu.getAccumulator());
assertFalse(cpu.getZeroFlag());
assertTrue(cpu.getCarryFlag());
assertFalse(cpu.getNegativeFlag());
assertFalse(cpu.getOverflowFlag());
}
/* LDY Immediate Mode Tests - 0xa0 */
@@ -612,29 +564,63 @@ public class CpuImmediateModeTest extends TestCase {
/* SBC Immediate Mode Tests - 0xe9 */
public void test_SBC_SetsAccumulator() {
bus.loadProgram(0xa9, 0xff, // LDA #$FF
0xe9, 0x01, // SBC #$01
0xe9, 0x01, // SBC #$a0
0xe9, 0x01, // SBC #$02
0xe9, 0x01); // SBC #$06
public void test_SBC() {
bus.loadProgram(0xa9, 0x00, // LDA #$00
0xe9, 0x01); // SBC #$01
cpu.step(2);
assertEquals(0xfe, cpu.getAccumulator());
assertTrue(cpu.getNegativeFlag());
assertFalse(cpu.getOverflowFlag());
assertFalse(cpu.getZeroFlag());
assertFalse(cpu.getCarryFlag());
cpu.reset();
bus.loadProgram(0xa9, 0x7f, // LDA #$7f
0xe9, 0x01); // SBC #$01
cpu.step(2);
assertEquals(0x7d, cpu.getAccumulator());
assertFalse(cpu.getNegativeFlag());
assertFalse(cpu.getOverflowFlag());
assertFalse(cpu.getZeroFlag());
assertTrue(cpu.getCarryFlag());
cpu.reset();
bus.loadProgram(0xa9, 0x80, // LDA #$80
0xe9, 0x01); // SBC #$01
cpu.step(2);
assertEquals(0x7e, cpu.getAccumulator());
assertFalse(cpu.getNegativeFlag());
assertTrue(cpu.getOverflowFlag());
assertFalse(cpu.getZeroFlag());
assertTrue(cpu.getCarryFlag());
cpu.reset();
bus.loadProgram(0xa9, 0xff, // LDA #$ff
0xe9, 0x01); // SBC #$01
cpu.step(2);
assertEquals(0xfd, cpu.getAccumulator());
assertTrue(cpu.getNegativeFlag());
assertFalse(cpu.getOverflowFlag());
assertFalse(cpu.getZeroFlag());
assertTrue(cpu.getCarryFlag());
cpu.step();
assertEquals(0xfc, cpu.getAccumulator());
assertTrue(cpu.getCarryFlag());
cpu.step();
assertEquals(0xfb, cpu.getAccumulator());
assertTrue(cpu.getCarryFlag());
cpu.step();
assertEquals(0xfa, cpu.getAccumulator());
cpu.reset();
bus.loadProgram(0xa9, 0x02, // LDA #$02
0xe9, 0x01); // SBC #$01
cpu.step(2);
assertEquals(0x00, cpu.getAccumulator());
assertFalse(cpu.getNegativeFlag());
assertFalse(cpu.getOverflowFlag());
assertTrue(cpu.getZeroFlag());
assertTrue(cpu.getCarryFlag());
}
}
public void test_SBC_IncludesNotOfCarry() {
cpu.reset();
bus.loadProgram(0x38, // SEC
0xa9, 0x00, // LDA #$00
0xe9, 0x01); // SBC #$01
cpu.step(3);
assertEquals(0xff, cpu.getAccumulator());
}
}