DE2: USB examples

Hello,

I'm trying to figure out how to go about starting a USB device that blinks LEDs if told to do so by PC.

Looking at the example, DE2_USB_API, I can see TONS of Verilog files for a Verilog project where most projects are done in VHDL. Not that big of a deal, I think I should be able to port it, but I'm not sure what peices I will need. I have been looking at the embedded programming guide and the datasheet, but I'm not sure what parts of the DE2 i need to be working with in order to blink 2 simple LEDs.

For Example, these are all outputs and one inout:

inout		OTG_DATA;				//	ISP1362 Data bus 16 Bits
output		OTG_ADDR;				//	ISP1362 Address 2 Bits
output			OTG_CS_N;				//	ISP1362 Chip Select
output			OTG_RD_N;				//	ISP1362 Write
output			OTG_WR_N;				//	ISP1362 Read
output			OTG_RST_N;				//	ISP1362 Reset
output			OTG_FSPEED;				//	USB Full Speed,	0 = Enable, Z = Disable
output			OTG_LSPEED;				//	USB Low Speed, 	0 = Enable, Z = Disable
output			OTG_INT0;				//	ISP1362 Interrupt 0
output			OTG_INT1;				//	ISP1362 Interrupt 1
output			OTG_DREQ0;				//	ISP1362 DMA Request 0
output			OTG_DREQ1;				//	ISP1362 DMA Request 1
output			OTG_DACK0_N;			//	ISP1362 DMA Acknowledge 0
output			OTG_DACK1_N;			//	ISP1362 DMA Acknowledge 1

are there no inputs? Page 10 of the programming guide reads:

--- Quote Start ---

The ISP1362 can be viewed as a complete set of USB functionality—host, device and OTG—that is accessible to the

programmer through four I/O ports. Writing and reading register sets control the functionality, and writing and reading

the respective buffers access the USB traffic.

At the lowest level, the ISP1362 is accessed as four I/O ports. These are:

• Device Controller command port

• Device Controller data port

• Host Controller command port

• Host Controller data port.

The OTG Controller shares the same I/O ports as the Host Controller.

--- Quote End ---

is there a reason why these ports are not listed in the .v file? What am I supposed to be writing an interface for on the hardware side? I have what seems to be a good looking tutorial for the software side, so I figured I should tackle the hardware first.

Can someone please help?

Thanks

Malik

-edit-

Does this example use the J-TAG(USBLaster?) port and not the USB Device port??