Using USB1.1 in usb_dev_bulk example

Hi all,
I want to use USB1.1 in usb_dev_bulk example instead of using USBOTG, I think the daunting modification is in USB0DeviceIntHandler() function.
void
USB0DeviceIntHandler(void)
{
    unsigned int ulStatus = 0;
    unsigned int epStatus = 0;    
 
#if defined(am335x) || defined(c6a811x) || defined(am386x) || \
    defined(c6741x)
    //
    // Get the controller interrupt status.
    //
    ulStatus = HWREG(USB_0_OTGBASE + USB_0_IRQ_STATUS_1);
    //
    // Get the EP interrupt status.
    //
    epStatus = HWREG(USB_0_OTGBASE + USB_0_IRQ_STATUS_0);
    //
    // Clear the controller interrupt status.
    //
    HWREG(USB_0_OTGBASE + USB_0_IRQ_STATUS_1) = ulStatus;
    //
    // Clear the EP interrupt status.
    //
    HWREG(USB_0_OTGBASE + USB_0_IRQ_STATUS_0) = epStatus;
 
#ifdef DMA_MODE    
    HWREG(USBSS_BASE + USBSS_IRQ_STATUS) =  
        HWREG(USBSS_BASE + USBSS_IRQ_STATUS);
#endif
    //
    //Call the Interrupt Handler.
    //
    USBDeviceIntHandlerInternal(0, ulStatus, &epStatus);
    //
    //End of Interrupts.
    //
    HWREG(USB_0_OTGBASE + USB_0_IRQ_EOI) = 0;
 
#ifdef DMA_MODE
    HWREG(USBSS_BASE + USBSS_IRQ_EOI) = 0;
#endif
 
#else    
    //
    // Get the controller interrupt status.
    //
    ulStatus = HWREG(USB_0_OTGBASE + USB_0_INTR_SRC);
    epStatus = 0;
    // Clear the Interrupts
    HWREG(USB_0_OTGBASE + USB_0_INTR_SRC_CLEAR) = ulStatus;
#ifdef _TMS320C6X
    IntEventClear(SYS_INT_USB0);
#else
    IntSystemStatusClear(SYS_INT_USB0);
#endif
 
    //
    // Call the internal handler.
    //
    USBDeviceIntHandlerInternal(0, ulStatus, NULL);
 
    // End of Interrupts
    HWREG(USB_0_OTGBASE + USB_0_END_OF_INTR) = 0;
#endif    
 
}

How to make the modification?? I tried to change in the macros in this function but I don't find the corresponding macros of USB1.1 !!
Urgent help please.
Regards.
Muhammad