public void Step()
{
if (!Running)
{
throw new ApplicationNotRunning();
}
if (Current >= Instructions.Length)
{
throw new ApplicationExit(0);
}
int[] args = proc.TwoArgs(Instructions[Current].Param);
switch (Instructions[Current].Op)
{
case Instruction.OpType.Interrupt:
Vars.AMem(0, api.Interrupt(Instructions[Current].Param[0], Vars.Get(16)));
break;
case Instruction.OpType.Assign:
var by = new List <byte>();
bool use = false;
foreach (byte z in Instructions[Current].Param)
{
if (use)
{
by.Add(z);
}
use |= z == 254;
}
Vars.AMem(args[0], by.ToArray());
break;
case Instruction.OpType.Addr:
Vars.AMem(args[0], args[1]);
break;
case Instruction.OpType.Move:
Vars.AMem(args[0], Vars.AMem(args[1]));
break;
case Instruction.OpType.Allocate:
Vars.AMem(args[0], Vars.FreeAddr, args[1]);
break;
case Instruction.OpType.Label:
Labels[BitConverter.ToInt32(Vars.AMem(args[0]), 0)] = Current;
break;
case Instruction.OpType.Goto:
if (Labels[BitConverter.ToInt32(Vars.AMem(args[0]), 0)] != -1)
{
if (Vars.AMem(args[1])[0] == 0x1)
{
Current = Labels[BitConverter.ToInt32(Vars.AMem(args[0]), 0)];
}
}
break;
case Instruction.OpType.Clear:
Vars.AMemClear(args[0]);
break;
default:
Vars.AMem(0, proc.Execute(Instructions[Current]));
break;
}
Current++;
}
