Re: [Discuss-gnuradio] Finding the USRP2's CPLD source code

[Matt Ettus]

On 03/25/2010 04:20 AM, G Wildebeest wrote:
> Hi all,
>
> I'm poking around the USRP2's CPLD, the XC9572, mainly just to
> understand exactly how the U2 boots, and so looking for the Verilog
> source code that goes into the CPLD.  I find
> usrp2/fpga/boot_cpld/boot_cpld.v, but this file has a comment that it is
> "only for u2_rev2," and I'm using u2_rev3 like most others.

This comment is old, and it meant "not for the rev 1".  So it works with 
the rev2 (which was never sold) and the rev 3 and rev 4.  boot_cpld.v is 
the top level file, and it includes some of the files from 
opencores/spi_boot


> usrp2/fpga/models/cpld_model.v looks promising too; any hints?

That is a file used to model the CPLD in order to do simulations of the 
FPGA.  It is not compiled into the design itself.

Matt