public static bool F_LOADW()
{
byte r = Memory.Read((ushort)(CPU.ProgCtr + 1));
CPU.SetRegister(r, CPU.W);
CPU.StepProgramCounter(I_LOADW.Arguments);
return(true);
}
public static bool F_XOR()
{
byte rx = Memory.Read((ushort)(CPU.ProgCtr + 1));
byte ry = Memory.Read((ushort)(CPU.ProgCtr + 2));
CPU.SetRegister(rx, (byte)(CPU.Registers[rx] ^ CPU.Registers[ry]));
CPU.StepProgramCounter(I_XOR.Arguments);
return(true);
}
public static bool F_SUB()
{
byte r = Memory.Read((ushort)(CPU.ProgCtr + 1));
byte b = Memory.Read((ushort)(CPU.ProgCtr + 2));
CPU.SetRegister(15, (byte)(CPU.Registers[r] > b ? 1 : 0));
CPU.SetRegister(r, (byte)(CPU.Registers[r] - b));
CPU.StepProgramCounter(I_SUB.Arguments);
return(true);
}
public static bool F_LOAD()
{
byte r = Memory.Read((ushort)(CPU.ProgCtr + 1));
byte left = Memory.Read((ushort)(CPU.ProgCtr + 2));
byte right = Memory.Read((ushort)(CPU.ProgCtr + 3));
ushort addr = BytesToAddress(left, right);
CPU.SetRegister(r, Memory.Read(addr));
CPU.StepProgramCounter(I_LOAD.Arguments);
return(true);
}
public static bool F_RAND()
{
byte r = Memory.Read((ushort)(CPU.ProgCtr + 1));
byte b = Memory.Read((ushort)(CPU.ProgCtr + 2));
try
{
byte rand = (byte)DataUtils.RandNum(b);
CPU.SetRegister(r, rand);
CPU.StepProgramCounter(I_RAND.Arguments);
}
catch (Exception ex)
{
Runner.IsRunning = false;
CLI.Write("[FATAL] " + Color.Red); CLI.WriteLine(ex.Message, Color.White);
}
return(true);
}
