public void TestToString()
{
Clock clock = new Clock();
TicTok tictok = new TicTok();
tictok.Init();
int TState = 0;
AReg areg = new AReg();
TReg treg = new TReg();
BReg breg = new BReg();
CReg creg = new CReg();
IReg ireg = new IReg();
IPort1 port1 = new IPort1();
IPort2 port2 = new IPort2();
MDR mdr = new MDR();
RAM ram = new RAM();
mdr.SetRefToRAM(ref ram);
ALU alu = new ALU(ref areg, ref treg);
OReg3 oreg3 = new OReg3(ref alu);
OReg4 oreg4 = new OReg4(ref alu);
HexadecimalDisplay hexadecimalDisplay = new HexadecimalDisplay(ref oreg3);
Flag flagReg = new Flag(ref alu);
PC pc = new PC(ref flagReg);
MAR mar = new MAR(ref ram);
SEQ seq = SEQ.Instance();
Wbus.Instance().Value = string.Concat(Enumerable.Repeat('0', 16));
Instruction currentInstruction = new Instruction
{
OpCode = "ADD B",
BinCode = "10000000",
TStates = 4,
AffectsFlags = true,
AddressingMode = AddressingMode.Register,
Bytes = 1
};
Frame frame = new Frame(currentInstruction, TState, port1, port2, pc, mar, ram,
ram.RAMDump(), mdr, ireg, SEQ.Instance(),
Wbus.Instance().Value, areg, alu, flagReg,
treg, breg, creg, oreg3, oreg4, hexadecimalDisplay);
_ = frame.ToString();
_ = frame.OutputRegister();
}
public Frame(Instruction instruction, int TState, IPort1 ip1, IPort2 ip2, PC pc, MAR mar, RAM ram,
List <string> ramContents, MDR mdr, IReg ireg, SEQ seq, string wbus_string,
AReg areg, ALU alu, Flag flagReg, TReg treg, BReg breg, CReg creg,
OReg3 oreg3, OReg4 oreg4, HexadecimalDisplay hexadecimalDisplay)
{
InstructionData = instruction;
if (InstructionData.OpCode.Contains(','))
{
InstructionData.OpCode = InstructionData.OpCode.Replace(",", string.Empty);
}
this.TState = TState;
this.AReg = areg.ToString_Frame_Use();
this.BReg = breg.ToString_Frame_Use();
this.CReg = creg.ToString_Frame_Use();
this.TReg = treg.ToString_Frame_Use();
this.IReg = ireg.ToString_Frame_Use(); // The real ToString() is in use with a substring in it. This is needed for proper operation
this.MAR = mar.ToString_Frame_Use();
this.MDR = mdr.RegContent;
this.PC = pc.RegContent;
this.ALU = alu.ToString();
this.WBus = wbus_string;
this.OPort1 = oreg3.ToString_Frame_Use();
this.OPort2 = oreg4.ToString_Frame_Use();
this.HexadecimalDisplay = hexadecimalDisplay.RegContent;
this.RAM = ramContents;
this.SEQ = seq.ToString();
this.WBus = wbus_string; // I didnt want to mess with the Singleton in the frame, so the value will just be passed as a string
this.RAM_Reg = ram.ToString_Frame_Use();
this.Flags = flagReg.RegContent;
if (instruction == null)
{
this.IReg = "???";
}
if (TState > 3)
{
Instruction = InstructionData.OpCode;
}
else
{
Instruction = "???";
}
}
// *************************************************************************
// *************************************************************************
// Engine Runtime
// *************************************************************************
public void Run()
{
Clock clock = new Clock();
TicTok tictok = new TicTok();
tictok.Init();
AReg areg = new AReg();
TReg treg = new TReg();
BReg breg = new BReg();
CReg creg = new CReg();
IReg ireg = new IReg();
IPort1 iport1 = new IPort1();
IPort2 iport2 = new IPort2();
MDR mdr = new MDR();
RAM ram = new RAM();
mdr.SetRefToRAM(ref ram);
ALU alu = new ALU(ref areg, ref treg);
areg.SetALUReference(ref alu);
breg.SetALUReference(ref alu);
creg.SetALUReference(ref alu);
OReg3 oreg3 = new OReg3(ref alu);
OReg4 oreg4 = new OReg4(ref alu);
HexadecimalDisplay hexadecimalDisplay = new HexadecimalDisplay(ref oreg3);
Flag flagReg = new Flag(ref alu);
PC pc = new PC(ref flagReg);
MAR mar = new MAR(ref ram);
SEQ seq = SEQ.Instance();
Wbus.Instance().Value = string.Concat(Enumerable.Repeat('0', 16));
areg.Subscribe(clock);
treg.Subscribe(clock);
breg.Subscribe(clock);
creg.Subscribe(clock);
ireg.Subscribe(clock);
mar.Subscribe(clock);
pc.Subscribe(clock);
alu.Subscribe(clock); // ALU must come after A and T
flagReg.Subscribe(clock);
ram.Subscribe(clock);
mdr.Subscribe(clock);
oreg3.Subscribe(clock);
hexadecimalDisplay.Subscribe(clock);
oreg4.Subscribe(clock);
// Load the program into the RAM
ram.LoadProgram(Program);
// Load the intsructionSet into the SEQ
seq.Load(InstructionSet);
Frame tempFrame;
#region Program_Exec
// Since T1-T3 for all of the Intruction is the same,
// LDA or "0000" will be used as the intruction for all T1-T3's
clock.IsEnabled = true;
int max_loop_count = 10_000;
int loop_counter = 0;
int TState = 1;
// A basic empty instruction state with 3 TStates since on the 4th the instruction
// will be known and set to a new object reference.
Instruction currentInstruction = new Instruction()
{
OpCode = "???",
TStates = 4 // Since by 4 TStates it should know what instruction it is on
};
List <string> controlWords = new List <string>();
bool? didntJump = null;
while (clock.IsEnabled)
{
// Log the Instruction
if (TState == 4)
{
currentInstruction = InstructionSet.Instructions.FirstOrDefault(i => i.BinCode.Equals(ireg.RegContent));
seq.LoadBackupControlWords(currentInstruction.MicroCode);
string iname = currentInstruction.OpCode;
int operandVal = Convert.ToInt32(ireg.RegContent, 2);
string hexOperand = "0x" + operandVal.ToString("X");
}
if (TState <= 3)
{
seq.UpdateControlWordReg(TState, "00000000", didntJump);
if (didntJump ?? false)
{
pc.SkipByte();
didntJump = null;
}
}
else
{
seq.UpdateControlWordReg(TState, ireg.RegContent);
}
clock.SendTicTok(tictok);
tictok.ToggleClockState();
clock.SendTicTok(tictok);
tictok.ToggleClockState();
tempFrame = new Frame(currentInstruction, TState, iport1, iport2, pc, mar, ram,
ram.RAMDump(), mdr, ireg, SEQ.Instance(),
Wbus.Instance().Value, areg, alu, flagReg,
treg, breg, creg, oreg3, oreg4, hexadecimalDisplay);
_FrameStack.Add(tempFrame);
// HLT
if (ireg.RegContent.Equals("01110110", StringComparison.Ordinal) && TState == 5)
{
clock.IsEnabled = false;
_RAMDump = ram.RAMDump();
}
if (loop_counter >= max_loop_count)
{
throw new EngineRuntimeException("Engine Error: Infinite Loop Detected");
}
else
{
loop_counter++;
}
if (TState == 7 && currentInstruction.OpCode.StartsWith('J'))
{
pc.CheckForJumpCondition();
// PC is going to jump so do not let it fetch the next byte and immediately endx
if (!pc.WontJump)
{
currentInstruction.TStates = 7;
didntJump = true;
}
}
if (TState < currentInstruction.TStates)
{
TState++;
}
else
{
TState = 1;
currentInstruction = new Instruction()
{
OpCode = "???",
TStates = 4 // Since by 4 TStates it should know what instruction it is on
};
}
}
OutputReg = oreg3.ToString();
#endregion Program_Exec
}