protected override void PrivilegedExecute()
{
if (IsReadInstruction)
{
switch (ReadOpCode)
{
case MemoryManagementReadOpCode.CINT:
CINT();
break;
case MemoryManagementReadOpCode.RDF:
RDF();
break;
case MemoryManagementReadOpCode.RIB:
RIB();
break;
case MemoryManagementReadOpCode.RIF:
RIF();
break;
case MemoryManagementReadOpCode.RMF:
RMF();
break;
case MemoryManagementReadOpCode.SINT:
SINT();
break;
case MemoryManagementReadOpCode.CUF:
CUF();
break;
case MemoryManagementReadOpCode.SUF:
SUF();
break;
default:
throw new NotImplementedException();
}
}
else
{
if (ChangeOpCodes.HasFlag(MemoryManagementChangeOpCodes.CDF))
{
Register.DF.SetDF(Data >> 3);
}
if (ChangeOpCodes.HasFlag(MemoryManagementChangeOpCodes.CIF))
{
Register.IB.SetIB(Data >> 3);
Interrupts.Inhibit();
}
}
}
private void RMF()
{
var sf = Register.SF;
Register.IB.SetIB(sf.IF);
Register.DF.SetDF(sf.DF);
Register.UB.SetUB(sf.UF);
Interrupts.Inhibit();
}
private void RTF()
{
var acc = Register.AC.Accumulator;
Register.AC.SetLink((acc >> 11) & Masks.FLAG);
Register.IB.SetIB(acc >> 3);
Register.DF.SetDF(acc);
Register.UB.SetUB(acc >> 6);
Interrupts.Enable(false);
Interrupts.Inhibit();
}
private void SUF()
{
Register.UB.SetUB(1);
Interrupts.Inhibit();
}
private void CUF()
{
Register.UB.Clear();
Interrupts.Inhibit();
}
