public void RunCpuTest()
{
IEmulator emulator = this.GetInstance();
emulator.LoadFile(@"TestRoms\nestest\nestest.nes");
List <string> expectedOutput = new List <string>(File.ReadAllLines(@"TestResources\CpuTests\nestest.expected"));
IProcessorCore cpu = (IProcessorCore)emulator.Components.First(c => c.Name == "Ricoh 2A03 CPU");
IComponentWithRegisters ppu = (IComponentWithRegisters)emulator.Components.First(c => c.Name == "Ricoh 2C02 PPU");
IMemoryBus cpuBus = (IMemoryBus)emulator.Components.First(c => c.Name == "CPU Bus");
// Jump to automated test entry point
cpu.GetRegisterByName("PC").Value = 0xC000;
// Set initial state
cpu.GetRegisterByName("S").Value = 0xFD;
ppu.GetRegisterByName("cycle").Value = 0;
ppu.GetRegisterByName("scanline").Value = 241;
IEnumerator <string> outputLineEnumerator = expectedOutput.GetEnumerator();
outputLineEnumerator.MoveNext();
base.RunEmulator(emulator, () =>
{
string state = this.DumpEmulatorState(cpu, ppu, cpuBus);
string expectedOutputLine = outputLineEnumerator.Current;
if (!expectedOutputLine.StartsWith("#") &&
!String.Equals(state, expectedOutputLine, StringComparison.Ordinal))
{
Debug.WriteLine("**** {0}", (object)state);
Debug.WriteLine("Exp: {0}", (object)expectedOutputLine);
Assert.Fail("Output mismatch!");
return(false);
}
Debug.WriteLine(state);
return(outputLineEnumerator.MoveNext());
});
}
// Dump current CPU/PPU state in Nintendulator-ish format
private string DumpEmulatorState(IProcessorCore cpu, IComponentWithRegisters ppu, IMemoryBus cpuBus)
{
UInt16 PC = (UInt16)cpu.GetRegisterByName("PC").Value;
byte A = (byte)cpu.GetRegisterByName("A").Value;
byte X = (byte)cpu.GetRegisterByName("X").Value;
byte Y = (byte)cpu.GetRegisterByName("Y").Value;
string P = cpu.GetRegisterByName("P").FormattedValue;
byte S = (byte)cpu.GetRegisterByName("S").Value;
int cycle = ppu.GetRegisterByName("cycle").Value;
int scanline = ppu.GetRegisterByName("scanline").Value;
StringBuilder state = new StringBuilder();
state.AppendFormat("{0:X4} ", PC);
IEnumerable <byte> instructionBytes = cpu.GetInstructionBytes(PC);
if (!instructionBytes.Any())
{
state.AppendFormat("UNKNOWN: {0:X2}", cpuBus.Read(PC));
return(state.ToString());
}
IInstruction instruction = cpu.DecodeInstruction(instructionBytes);
state.AppendFormat("{0,-8} {1,4} {2} {3}",
String.Join(" ", instructionBytes.Select(b => String.Format("{0:X2}", b))),
instruction.Mnemonic,
instruction.Operands,
instruction.OperandsDetail);
state.Append(' ', 48 - state.Length);
state.AppendFormat("A:{0:X2} X:{1:X2} Y:{2:X2} P:{3} SP:{4:X2} CYC:{5,3} SL:{6}",
A, X, Y, P, S, cycle, scanline);
return(state.ToString());
}
public static IRegister GetRegisterByName(this IComponentWithRegisters component, string registerName)
{
return(component.Registers.FirstOrDefault(r => String.Equals(r.Name, registerName, StringComparison.Ordinal)));
}
