public RealMachine(Input inputHandler = null, Output outputHandler = null)
{
RealMemory = new RealMemory();
ExternalMemory = new ExternalMemory();
InputHandler = inputHandler;
OutputHandler = outputHandler;
ChannelTool = new ChannelTool(RealMemory, ExternalMemory, InputHandler, OutputHandler);
Processor = new Processor(RealMemory, ChannelTool);
ChannelTool.SetProcessor(Processor);
VirtualMemory = null;
Pager = null;
}
public ChannelTool(RealMemory realMemmory, ExternalMemory externalMemory, Input inputHandler, Output outputHandler, Processor processor = null)
{
RealMemory = realMemmory;
ExternalMemory = externalMemory;
InputHandler = inputHandler;
OutputHandler = outputHandler;
Processor = processor;
registers = new Dictionary <string, Register> {
{ "SB", new HexRegister() }, // Copy source block address
{ "DB", new HexRegister() }, // Copy destination block address
{ "ST", new ChoiceRegister(1, 2, 3, 4, 5, 6, 7) }, // Source object number: 1-user memory, 2-supervisor, 3-external, 4-input
{ "DT", new ChoiceRegister(1, 2, 3, 4, 5, 6, 7) }, // Destination object number: 1-user memory, 2-supervisor, 3-external, 4-output
};
}
public void XCHG()
{
char[][] sourceBlock = null;
char[] sourceWord = null;
int sourceAddress = ((HexRegister)registers["SB"]).GetIntValue();
int destinationAddress = ((HexRegister)registers["DB"]).GetIntValue();
int STvalue = ((ChoiceRegister)registers["ST"]).GetIntValue();
int DTvalue = ((ChoiceRegister)registers["DT"]).GetIntValue();
if ((STvalue == '5' || STvalue == '6' || STvalue == '7') ^ (DTvalue == '5' || DTvalue == '6' || DTvalue == '7'))
{
throw new Exception("Channel tool cannot work with word and block at the same time.");
}
switch (STvalue)
{
case 1:
sourceBlock = RealMemory.GetUserMemoryBlockValues(sourceAddress);
break;
case 2:
sourceBlock = RealMemory.GetSupervisorMemoryBlockValues(sourceAddress);
break;
case 3:
sourceBlock = ExternalMemory.GetBlockValues(sourceAddress);
break;
case 4:
sourceBlock = InputHandler.ReadBlock();
break;
case 5:
sourceWord = InputHandler.ReadWord();
break;
case 6:
sourceWord = Processor.GetRegisterValue("R1");
break;
case 7:
sourceWord = Processor.GetRegisterValue("R2");
break;
default:
throw new Exception("Channel tool ST register value is incorrect.");
}
switch (DTvalue)
{
case 1:
RealMemory.SetUserMemoryBlockValues(destinationAddress, sourceBlock);
break;
case 2:
RealMemory.SetSupervisorMemoryBlockValues(destinationAddress, sourceBlock);
break;
case 3:
ExternalMemory.SetBlockValues(destinationAddress, sourceBlock);
break;
case 4:
OutputHandler.WriteBlock(sourceBlock);
break;
case 5:
OutputHandler.WriteWord(sourceWord);
break;
case 6:
Processor.SetRegisterValue("R1", sourceWord);
break;
case 7:
Processor.SetRegisterValue("R2", sourceWord);
break;
default:
throw new Exception("Channel tool ST register value is incorrect.");
}
}