public void TestZeroFlag()
{
Cpu cpu = new Cpu();
cpu.SetFlag(Flags.C, false);
cpu.A = 0x80;
cpu.Fetched = 0x80;
Assert.Equal(1, InstructionSet.ADC(cpu));
Assert.True(cpu.GetFlag(Flags.C));
Assert.False(cpu.GetFlag(Flags.N));
Assert.True(cpu.GetFlag(Flags.V));
Assert.True(cpu.GetFlag(Flags.Z));
Assert.Equal(0x00, cpu.A);
}
public void TestNegNegOverflow()
{
Cpu cpu = new Cpu();
cpu.SetFlag(Flags.C, false);
cpu.A = 0x81;
cpu.Fetched = 0x81;
Assert.Equal(1, InstructionSet.ADC(cpu));
Assert.True(cpu.GetFlag(Flags.C));
Assert.False(cpu.GetFlag(Flags.N));
Assert.True(cpu.GetFlag(Flags.V));
Assert.False(cpu.GetFlag(Flags.Z));
Assert.Equal(0x02, cpu.A);
}
public void TestAddLargeNumbers()
{
Cpu cpu = new Cpu();
cpu.SetFlag(Flags.C, false);
cpu.A = 0xFF;
cpu.Fetched = 0xFF;
Assert.Equal(1, InstructionSet.ADC(cpu));
Assert.True(cpu.GetFlag(Flags.C));
Assert.True(cpu.GetFlag(Flags.N));
Assert.False(cpu.GetFlag(Flags.V));
Assert.False(cpu.GetFlag(Flags.Z));
Assert.Equal(0xFE, cpu.A);
}
public void TestAddToAccumulatorWithoutCarry()
{
Cpu cpu = new Cpu();
cpu.SetFlag(Flags.C, false);
cpu.A = 0x04;
cpu.Fetched = 0x81;
Assert.Equal(1, InstructionSet.ADC(cpu));
Assert.False(cpu.GetFlag(Flags.C));
Assert.True(cpu.GetFlag(Flags.N));
Assert.False(cpu.GetFlag(Flags.V));
Assert.False(cpu.GetFlag(Flags.Z));
Assert.Equal(0x85, cpu.A);
}
public void TestPosPosOverflow()
{
Cpu cpu = new Cpu();
cpu.SetFlag(Flags.C, false);
cpu.A = 0x60;
cpu.Fetched = 0x60;
Assert.AreEqual(1, InstructionSet.ADC(cpu));
Assert.IsFalse(cpu.GetFlag(Flags.C));
Assert.IsTrue(cpu.GetFlag(Flags.N));
Assert.IsTrue(cpu.GetFlag(Flags.V));
Assert.IsFalse(cpu.GetFlag(Flags.Z));
Assert.AreEqual(0xC0, cpu.A);
}
