public void Setup()
{
_byteFactory = TestUtils.CreateByteFactory();
_fullByte = _byteFactory.Create(255);
Instruction = _byteFactory.Create(0);
Flags = new Caez();
var cpuPinStates = new CpuPinStates(TestUtils.CreateClock(), TestUtils.CreateStepper(), Instruction, Flags,
TestUtils.CreateAnd(), TestUtils.CreateOr(), TestUtils.CreateNot(), TestUtils.CreateDecoder(),
_byteFactory);
var bus = new Bus <IByte>(new BusMessage <IByte> {
Data = new Byte(), Name = "Bus"
});
var ioBus = new Bus <IByte>(new BusMessage <IByte> {
Data = new Byte(), Name = "IoBus"
});
var byteRegisterFactory = TestUtils.CreateByteRegisterFactory();
var ram = TestUtils.CreateRam(bus);
var computerState = new ComputerState(byteRegisterFactory, ram, TestUtils.CreateBus1Factory(),
new ArithmeticLogicUnitFactory(), TestUtils.CreateCaezRegisterFactory(), new BitRegisterFactory(TestUtils.CreateMemoryGateFactory()), bus, ioBus);
_sut = new Computer(cpuPinStates, computerState);
}
public void CanConvertFromByteToAscii(IByte inputByte, string expectedChar)
{
var result = new ByteToAsciiConverter(new ByteToBase10Converter(
new ByteFactory(new Base10Converter()), new Base10Converter())).ToAscii(inputByte);
Assert.AreEqual(expectedChar, result);
}
public static ByteRegister CreateRegister(this IByte input, bool set = true, bool enable = true)
{
var register = CreateRegister(set, enable);
register.Input = input;
return(register);
}
public void SetMemoryAddress(IByte address)
{
MemoryAddressRegister.Set = true;
MemoryAddressRegister.Apply(address);
MemoryAddressRegister.Set = false;
Apply();
}
public IByte Apply(IByte input, bool set)
{
var newState = new bool[8];
for (var i = 0; i < input.Count; i++)
{
newState[i] = _memoryGates[i].Apply(input[i], set);
}
return(_byteFactory.Create(newState));
}
public IByte Apply(IByte input, bool set)
{
var bits = new bool[8];
for (var i = 0; i < input.Count; i++)
{
bits[i] = _andGate.Apply(input[i], set);
}
return(_byteFactory.Create(bits));
}
public void CanConvertFromAsciiToByte(IByte outputByte, string inputChar)
{
var result =
new ByteToAsciiConverter(new ByteToBase10Converter(new ByteFactory(new Base10Converter()),
new Base10Converter()))
.ToByte(inputChar);
for (var i = 0; i < outputByte.Count; i++)
{
Assert.AreEqual(outputByte[i], result[i]);
}
}
public (bool equal, bool ALarger, IByte output) AreEqual(IByte a, IByte b, bool aboveBitIsEqual,
bool aboveBitALarger)
{
var output = new bool[8];
for (var i = a.Count - 1; i >= 0; i--)
{
var(eq, lg, op) = _bitComparator.AreEqual(a[i], b[i], aboveBitIsEqual, aboveBitALarger);
aboveBitIsEqual = eq;
aboveBitALarger = lg;
output[i] = op;
}
return(aboveBitIsEqual, aboveBitALarger, _byteFactory.Create(output));
}
public IByte Apply(IByte input, bool bus1)
{
Input = input;
Set = bus1;
var one = input[0];
var rest = input.Skip(1).ToArray();
var notBus1 = _not.Apply(bus1);
var notAndRest = rest.Select(s => _and.Apply(s, notBus1)).ToList();
var orOneAndBus1 = _or.Apply(one, bus1);
var output = notAndRest.Prepend(orOneAndBus1).ToArray();
Output = _byteFactory.Create(output);
_updateWire(Output);
return(Output);
}
public (IByte Ouput, bool ShiftOut) Shift(IByte input, bool shiftIn)
{
var shift = new[]
{
shiftIn,
input[0],
input[1],
input[2],
input[3],
input[4],
input[5],
input[6]
};
return(_byteFactory.Create(shift), input[7]);
}
public (IByte Sum, bool CarryOut) Add(IByte a, IByte b, bool carryIn)
{
var carryOut = carryIn;
var output = new bool[8];
for (var i = 0; i < a.Count; i++)
{
var(sum, carry) = _bitAdder.Add(a[i], b[i], carryOut);
output[i] = sum;
carryOut = carry;
}
var outputByte = _byteFactory.Create(output);
return(outputByte, carryOut);
}
public void Setup()
{
_byteFactory = TestUtils.CreateByteFactory();
_fullByte = _byteFactory.Create(255);
var bus = new Bus <IByte>(new BusMessage <IByte> {
Data = new Byte(), Name = "Bus"
});
var ioBus = new Bus <IByte>(new BusMessage <IByte> {
Data = new Byte(), Name = "IoBus"
});
var byteRegisterFactory = TestUtils.CreateByteRegisterFactory();
var ram = TestUtils.CreateRam(bus);
_pinStates = new PinStates();
_sut = new ComputerState(byteRegisterFactory, ram, TestUtils.CreateBus1Factory(),
new ArithmeticLogicUnitFactory(), TestUtils.CreateCaezRegisterFactory(), new BitRegisterFactory(TestUtils.CreateMemoryGateFactory()), bus, ioBus);
}
public AluOutput Apply(IByte a, IByte b, bool carryIn, Op op)
{
var opDecoder = _byteDecoder.Decode(op.One, op.Two, op.Three);
var xOr = _byteXOr.Apply(a, b);
var or = _byteOr.Apply(a, b);
var and = _byteAnd.Apply(a, b);
var not = _inverter.Invert(a);
var shiftLeft = _leftByteShifter.Shift(a, carryIn);
var shiftRight = _rightByteShifter.Shift(a, carryIn);
var adder = _byteAdder.Add(a, b, carryIn);
var comparatorResult = _byteComparator.AreEqual(a, b, true, false);
var enabledAdd = _byteEnabler.Apply(adder.Sum, opDecoder[0]);
var enabledShiftRight = _byteEnabler.Apply(shiftRight.Ouput, opDecoder[1]);
var enabledShiftLeft = _byteEnabler.Apply(shiftLeft.Ouput, opDecoder[2]);
var enabledNot = _byteEnabler.Apply(not, opDecoder[3]);
var enabledAnd = _byteEnabler.Apply(and, opDecoder[4]);
var enabledOr = _byteEnabler.Apply(or, opDecoder[5]);
var enabledXOr = _byteEnabler.Apply(xOr, opDecoder[6]);
var enabledComparator = _byteEnabler.Apply(comparatorResult.output, opDecoder[7]);
var carryOutAdd = _and.Apply(adder.CarryOut, opDecoder[0]);
var carryOutShiftRight = _and.Apply(shiftRight.ShiftOut, opDecoder[1]);
var carryOutShiftLeft = _and.Apply(shiftLeft.ShiftOut, opDecoder[2]);
var carryOut = _or.Apply(carryOutAdd, carryOutShiftRight, carryOutShiftLeft);
var output = _aluWire.Apply(enabledAdd, enabledShiftLeft, enabledShiftRight, enabledNot, enabledAnd,
enabledOr, enabledXOr, enabledComparator);
var zero = _isZeroGate.IsZero(output);
var aluOutput = new AluOutput
{
ALarger = comparatorResult.ALarger,
CarryOut = carryOut,
Equal = comparatorResult.equal,
Output = output,
Zero = zero
};
_updateFlags(new Caez {
C = aluOutput.CarryOut, A = aluOutput.ALarger, E = aluOutput.Equal, Z = aluOutput.Zero
});
_updateAcc(aluOutput.Output);
return(aluOutput);
}
public CpuPinStates(
IClock clock,
IStepper stepper,
IByte instruction,
Caez caez,
IAnd and,
IOr or,
INot not,
IDecoder decoder,
IByteFactory byteFactory)
{
_clock = clock;
_stepper = stepper;
_instruction = instruction;
_caez = caez;
_and = and;
_or = or;
_not = not;
_decoder = decoder;
_byteFactory = byteFactory;
}
public PinStates Step(IByte instruction, Caez flags)
{
_instruction = instruction;
_caez = flags;
return(Step());
}
public uint ToInt(IByte input)
{
return(_base10Converter.ToInt(input));
}
public IByte Invert(IByte input)
{
return(_byteFactory.Create(input.Select(s => _not.Apply(s)).ToArray()));
}
public string ToAscii(IByte input)
{
var intInput = _byteToBase10Converter.ToInt(input);
return(Ascii.Codes[intInput]);
}
public static bool[] ToBits(this IByte input)
{
return(new[]
{ input.One, input.Two, input.Three, input.Four, input.Five, input.Six, input.Seven, input.Eight });
}
public bool IsZero(IByte input)
{
var orRes = _or.Apply(input.ToArray());
return(_not.Apply(orRes));
}