public void NotReady(ReadyFlags lf)
{
lock (m_Lock)
{
ReadyFlags oldFlags = m_CurrentFlags;
m_CurrentFlags |= lf;
if (oldFlags == ReadyFlags.None && m_CurrentFlags != ReadyFlags.None)
{
TriggerLoginsEnabled(false);
}
}
}
public void Ready(ReadyFlags lf)
{
lock (m_Lock)
{
ReadyFlags oldFlags = m_CurrentFlags;
m_CurrentFlags &= ~lf;
if (oldFlags != ReadyFlags.None && m_CurrentFlags == ReadyFlags.None)
{
TriggerLoginsEnabled(true);
}
}
}
///////////////////////////////////////////////////////////////////////
#region Event Manager Support Methods
public static void AdjustReadyFlags(
bool noCancel, /* in */
ref ReadyFlags readyFlags /* in, out */
)
{
//
// HACK: Always perform full interpreter readiness checks
// *IF* we actually care about script cancellation.
//
if (!noCancel)
{
readyFlags &= ~ReadyFlags.Limited;
}
}
///////////////////////////////////////////////////////////////////////
public static bool HasFlags(
ReadyFlags flags,
ReadyFlags hasFlags,
bool all
)
{
if (all)
{
return((flags & hasFlags) == hasFlags);
}
else
{
return((flags & hasFlags) != ReadyFlags.None);
}
}
/// <summary>
/// Updates the ready state for busy devices, and sends a status update
/// to the PERQ if something has changed.
/// </summary>
private void RefreshReadyState()
{
ReadyFlags oldFlags = _deviceReadyState;
_deviceReadyState = 0;
// Run our busy clocks and set new ready state
for (int i = 0; i < _devices.Count; i++)
{
if (_devices[i].BusyBit != 0) // Skip devices without a Ready bit
{
if (_devices[i].BusyClocks != 0) // If they're busy, clock 'em
{
_devices[i].BusyClocks--;
}
if (_devices[i].BusyClocks == 0) // If they aren't busy now, set Ready bit
{
_deviceReadyState |= _devices[i].BusyBit;
}
}
}
// If something changed, tell the PERQ
if (oldFlags != _deviceReadyState)
{
#if TRACING_ENABLED
if (Trace.TraceOn)
{
Trace.Log(LogType.Z80State, "Sending Z80 device ready status @ {0}: {1}.",
_clocks, _deviceReadyState);
}
#endif
_outputFifo.Enqueue(Z80System.SOM); // SOM
_outputFifo.Enqueue((byte)Z80toPERQMessage.Z80StatusChange);
_outputFifo.Enqueue((byte)_deviceReadyState); // Data
}
}
