{
			DWORD dwInterval = READ_REGISTER_ULONG(HcFmInterval(m_regBase));
            dwInterval &= gcHcFmIntervalFImask;
            if(dwInterval != gcHcFmIntervalNominal)
                m_regBase = 0;
        }
		
        if(m_regBase)
        {
			DWORD dwThreshold = READ_REGISTER_ULONG(HcLSThreshold(m_regBase));
#if 0 // the CMD HC uses a non-standard threshold; hosts using their chip cannot make this check.
            if((dwThreshold & gcHcLSThresholdLSTmask) != gcHcLSThresholdNominal)
                m_regBase = 0;
#endif
        }
		
    }
    __except(EXCEPTION_EXECUTE_HANDLER)
    {
        m_regBase = 0;
    }
}


CPhcd::~CPhcd()
{
    DWORD   dwWaitReturn;
    UINT    dev, endpt;
    SDevice *pDev;
    SEndpoint *pEndpt;

    m_bClosing = TRUE;

    // Most of this destructor is never used!  We can remove
    // the parts that are never called...

    // Wake up the interrupt thread and give it time to die.
    if(m_hUsbInterrupt)
        SetEvent(m_hUsbInterrupt);

    // set the psudo interrupt to free it too
    if(m_hUsbPsudoInterrupt)
        SetEvent(m_hUsbPsudoInterrupt);

    if (m_hIsrThread)
    {
        dwWaitReturn = WaitForSingleObject(m_hIsrThread, 1000);
        if (dwWaitReturn != WAIT_OBJECT_0)
        {
            TerminateThread(m_hIsrThread, DWORD(-1));
        }
        CloseHandle(m_hIsrThread);
        m_hIsrThread = NULL;
    }


#ifdef USE_CRITICAL_THREAD
    if (m_hCriticalThread)
    {
        dwWaitReturn = WaitForSingleObject(m_hCriticalThread, 1000);
        if (dwWaitReturn != WAIT_OBJECT_0)
        {
            TerminateThread(m_hCriticalThread, DWORD(-1));
        }
        CloseHandle(m_hCriticalThread);
        m_hCriticalThread = NULL;
    }

    if(m_hReleaseCriticalThread)
    {
        CloseHandle(m_hReleaseCriticalThread);
        m_hReleaseCriticalThread = NULL;
    }

    if(m_hCriticalThreadDone)
    {
        CloseHandle(m_hCriticalThreadDone);
        m_hCriticalThreadDone = NULL;
    }
#endif // USE_CRITICAL_THREAD

    // we have to close our interrupt before closing the event!
    InterruptDisable(m_sysIntr);

    if(m_hUsbInterrupt)
    {
        CloseHandle(m_hUsbInterrupt);
        m_hUsbInterrupt = NULL;
    }

    if(m_hUsbPsudoInterrupt)
    {
        CloseHandle(m_hUsbPsudoInterrupt);
        m_hUsbPsudoInterrupt = NULL;
    }

	
    if(m_hClientDriverComplete)
    {
        CloseHandle(m_hClientDriverComplete);
        m_hClientDriverComplete = NULL;
    }

    if(m_regBase)
    {
        // let's stop ALL TD processing
        DisableControlList(m_regBase);
        DisableBulkList(m_regBase);
        DisableIntrAndIsochLists(m_regBase);
    }

    // wait long enough for all transfers to stop (10 ms - because the frame
    // length can change... I assume nobody makes it this long though)
    Sleep(10);

    if(m_hUSBDInstance)
    {
        LPUSBD_HCD_DETACH_PROC lpHcdDetachProc;
        lpHcdDetachProc = (LPUSBD_HCD_DETACH_PROC)
                GetProcAddress(m_hUSBDInstance, gcszHcdDetach);
        if(lpHcdDetachProc)
            (*lpHcdDetachProc)(m_pvHcdContext);

        FreeLibrary(m_hUSBDInstance);
    }

    for(dev = 0 ; dev < m_curMaxNumDevices ; dev++)
    {
        pDev = m_ppDevices[dev];
        if (pDev != NULL)
        {
            if(pDev->pHubPorts)
                delete [] pDev->pHubPorts;

//            if(pDev->pnHubPortPowerDraw)
//                delete [] pDev->pnHubPortPowerDraw;

            if (pDev->ppEndpts != NULL)
            {
                for (endpt = 0; endpt < pDev->maxEndpts; endpt++)
                {
                    pEndpt = pDev->ppEndpts[endpt];
                    if (pEndpt != NULL)
                    {
                        STransfer *pTransferHead;
                        pTransferHead = pEndpt->pTransferHead;
                        while (pTransferHead != NULL)
                        {
                            pEndpt->pTransferHead = pTransferHead->pNext;
                            if(pTransferHead->aCopyLengths)
                                delete [] pTransferHead->aCopyLengths;

                            delete pTransferHead;
                            pTransferHead = pEndpt->pTransferHead;
                        }

                        DeleteCriticalSection(&pEndpt->csSTransferListLock);
#ifdef USE_CRITICAL_THREAD
                        DeleteCriticalSection(&pEndpt->csCriticalThreadCancel);
#endif
                        delete pEndpt;
                    }
                }
                delete [] pDev->ppEndpts;
            }
            if (pDev->pfEndptAbortTransfers)
            {
                delete [] pDev->pfEndptAbortTransfers;
            }

            if(pDev->ohciDevice.lpConfigs)
            {
                LPPHCI_CONFIGURATION lpConfig = pDev->ohciDevice.lpConfigs;

                for(UINT iConfig = 0  ; iConfig <
                        pDev->ohciDevice.Descriptor.bNumConfigurations ;
                        ++iConfig, ++lpConfig)
                {
                    if(lpConfig->lpInterfaces)
                    {
                        LPPHCI_INTERFACE lpInterface = lpConfig->lpInterfaces;

                        for(UINT iInterface = 0 ; iInterface <
                                lpConfig->Descriptor.bNumInterfaces ;
                                ++iInterface, ++lpInterface)
                        {
                            if(lpInterface->lpEndpoints)
                            {
                                LPPHCI_ENDPOINT lpEndpoint =
                                        lpInterface->lpEndpoints;

                                for(UINT iEndpoint = 0 ; iEndpoint <
                                        lpInterface->Descriptor.bNumEndpoints ;
                                        ++iEndpoint, ++lpEndpoint)
                                {
                                    if(lpEndpoint->lpbExtended)
                                        delete lpEndpoint->lpbExtended;
                                }

                                delete [] lpInterface->lpEndpoints;
                            }

                            if(lpInterface->lpbExtended)
                                delete [] lpInterface->lpbExtended;
                        }

                        delete [] lpConfig->lpInterfaces;
                    }
                    if(lpConfig->lpbExtended)
                        delete [] lpConfig->lpbExtended;
                }

                delete [] pDev->ohciDevice.lpConfigs;
            }

            DeleteCriticalSection(&pDev->csAccessingEndpointArray);
            DeleteCriticalSection(&pDev->csAttachementDetachement);

            delete pDev;
        }
    }
    if(m_ppDevices)
        delete [] m_ppDevices;

    if (m_PortPowerAllocated) 
        delete [] m_PortPowerAllocated;

    STdInfo * pFreeSTdInfoHead;
    pFreeSTdInfoHead = m_pFreeSTdInfoHead;
    while (pFreeSTdInfoHead != NULL)
    {
        m_pFreeSTdInfoHead = pFreeSTdInfoHead->pNext;
        delete pFreeSTdInfoHead;
        pFreeSTdInfoHead = m_pFreeSTdInfoHead;
    }

    STdInfo * pTdRemovalList;
    pTdRemovalList = m_pTdProcessList;
    while (pTdRemovalList != NULL)
    {
        m_pTdProcessList = pTdRemovalList->pNext;
        delete pTdRemovalList;
        pTdRemovalList = m_pTdProcessList;
    }

    SEdInfo * pFreeSEdInfoHead;
    pFreeSEdInfoHead = m_pFreeSEdInfoHead;
    while (pFreeSEdInfoHead != NULL)
    {
        m_pFreeSEdInfoHead = pFreeSEdInfoHead->pNext;
        delete pFreeSEdInfoHead;
        pFreeSEdInfoHead = m_pFreeSEdInfoHead;
    }

    SEdInfo * pEdRemovalList;
    pEdRemovalList = m_pEdRemovalList;
    while (pEdRemovalList != NULL)
    {
        m_pEdRemovalList = pEdRemovalList->pNext;
        delete pEdRemovalList;
        pEdRemovalList = m_pEdRemovalList;
    }

    SPhysAddr * pFreePhysAddrHead;
    pFreePhysAddrHead = m_pFreePhysAddrHead;
    while (pFreePhysAddrHead != NULL)
    {
        m_pFreePhysAddrHead = pFreePhysAddrHead->pNext;
        delete pFreePhysAddrHead;
        pFreePhysAddrHead = m_pFreePhysAddrHead;
    }

    STransfer * pFreeTransferHead;
    pFreeTransferHead = m_pFreeTransferHead;
    while (pFreeTransferHead != NULL)
    {
        m_pFreeTransferHead = pFreeTransferHead->pNext;
        delete pFreeTransferHead;
        pFreeTransferHead = m_pFreeTransferHead;
    }

    SThreadParams * pFreeThreadParamsHead;
    pFreeThreadParamsHead = m_pFreeThreadParamsHead;
    while (pFreeThreadParamsHead != NULL)
    {
        m_pFreeThreadParamsHead = pFreeThreadParamsHead->pNext;
        delete pFreeThreadParamsHead;
        pFreeThreadParamsHead = m_pFreeThreadParamsHead;
    }

    DeleteCriticalSection(&m_csSTdInfoListLock);
    DeleteCriticalSection(&m_csThreadParamListLock);
    DeleteCriticalSection(&m_csAddr0Lock);
    DeleteCriticalSection(&m_csDeviceListLock);
    DeleteCriticalSection(&m_csOtherListsLock);
    DeleteCriticalSection(&m_csFrameAdjustment);
    DeleteCriticalSection(&m_csPortPower);
    DeleteCriticalSection(&m_csEdInfoListsLock);
    DeleteCriticalSection(&m_csTdListsLock);
    DeleteCriticalSection(&m_csScheduleLock);

#ifdef USE_CRITICAL_THREAD
    DeleteCriticalSection(&m_csClientInstallCriticalThread);
    DeleteCriticalSection(&m_csCriticalTds);
#endif
}


BOOL CPhcd::Initialize(void)
{
    BOOL    bOk;
    EError  errorCode;

    RETAILMSG(ISPDBG,(TEXT("+PHCD::Initialize\r\n")));

	if(!m_regBase)
	{
		return FALSE;
	}
	
	m_hUSBDInstance = LoadDriver(gcszUSBDFileName);

    if(m_hUSBDInstance)
    {
		m_pAttachProc = (LPUSBD_ATTACH_PROC)
                GetProcAddress(m_hUSBDInstance, gcszHcdDeviceAttach);

        m_pDetachProc = (LPUSBD_DETACH_PROC)
                GetProcAddress(m_hUSBDInstance, gcszHcdDeviceDettach);
	
        if(!m_pAttachProc || !m_pDetachProc)
            return FALSE;
		
        LPUSBD_HCD_ATTACH_PROC lpHcdAttachProc;
        lpHcdAttachProc = (LPUSBD_HCD_ATTACH_PROC)
                GetProcAddress(m_hUSBDInstance, gcszHcdAttach);
	
		if(lpHcdAttachProc)
            (*lpHcdAttachProc)((LPVOID)this, m_pHcdFuncs,  &m_pvHcdContext);
        else
            return FALSE;
    }
    else
	
		return FALSE;
    
	m_numRootHubPorts = READ_REGISTER_ULONG(HcRhDescriptorA(m_regBase))
        & gcRhDescriptorANDPmask;
	
    m_PortPowerAllocated = new DWORD [gcFirstRootPortNum + m_numRootHubPorts];
    // each port has 100 mA to start with for a new device to draw
    for(UINT iPower = gcFirstRootPortNum ; 
            iPower < m_numRootHubPorts + gcFirstRootPortNum ; 
            iPower++)
        m_PortPowerAllocated[iPower] = 100;

    m_PowerOnToPowerGoodTime = ((READ_REGISTER_ULONG(HcRhDescriptorA(m_regBase))
        & gcRhDescriptorAPOTPGTmask) >> 24) * 2;
    
	DEBUGMSG(ZONE_INIT,(TEXT("PHCI:PowerOn2PowerGood: %u\r\n"), m_PowerOnToPowerGoodTime));

    // We've got three threads, one for the interrupt DPC, another used
    // exclusively for bus enumeration (handling connects and disconnects),
    // and another for critical processing
#ifdef USE_CRITICAL_THREAD
    m_hReleaseCriticalThread = CreateEvent(NULL, FALSE, FALSE, NULL);
    if (m_hReleaseCriticalThread == NULL)
    {
        DEBUGMSG(ZONE_ERROR,
        (TEXT("PHCD: Error on CreateEvent\r\n")));
//        return(STATUS_UNSUCCESSFUL);
        return FALSE;
    }

    m_hCriticalThreadDone = CreateEvent(NULL, FALSE, FALSE, NULL);
    if(m_hCriticalThreadDone == NULL)
    {
        DEBUGMSG(ZONE_ERROR,
        (TEXT("PHCD: Error on CreateEvent\r\n")));
//        return(STATUS_UNSUCCESSFUL);
        return FALSE;
    }
#endif

    m_hUsbPsudoInterrupt = CreateEvent(NULL, FALSE, FALSE, NULL);
    if (m_hUsbPsudoInterrupt == NULL)
    {
        DEBUGMSG(ZONE_ERROR,
        (TEXT("PHCD: Error on CreateEvent\r\n")));
//        return(STATUS_UNSUCCESSFUL);
        return FALSE;
    }

    m_hUsbInterrupt = CreateEvent(NULL, FALSE, FALSE, NULL);
    if (m_hUsbInterrupt == NULL)
    {
        DEBUGMSG(ZONE_ERROR,
        (TEXT("PHCD: Error on CreateEvent for interrupt\r\n")));