NCD difference

[Thomas Reinemann]

Hello,

against the background of partial reconfiguration, I would like to
determine the difference between two initial configurations (NCDs). Does
any Xilinx tool support this?

Regards,

--
Dr. Thomas Reinemann www.uni-magdeburg.de/reineman
IMAT Public key available
Otto-von-Guericke-Universität Magdeburg
Universitätsplatz 2
39106 Magdeburg, Germany

 

[Gerd]

Thomas Reinemann <thomas.reinemann@masch-bau.uni-magdeburg.de> wrote:

against the background of partial reconfiguration, I would like to
determine the difference between two initial configurations (NCDs). Does
any Xilinx tool support this?

You are probably looking for
$ bitgen version1.ncd version1.bit
$ bitgen -r version1.bit version2.ncd diff1to2.bit


Gerd

 

[John Williams]

Gerd wrote:

Thomas Reinemann <thomas.reinemann@masch-bau.uni-magdeburg.de> wrote:

against the background of partial reconfiguration, I would like to
determine the difference between two initial configurations (NCDs). Does
any Xilinx tool support this?

You are probably looking for
$ bitgen version1.ncd version1.bit
$ bitgen -r version1.bit version2.ncd diff1to2.bit

Or if you are really brave, maybe

$ xdl -ncd2xdl file1.ncd
$ xdl -ncd2xdl file2.ncd

$ diff -u file1.xdl file2.xdl

Note I've never tried this, it could well produce garbage, depending on
how "repeatable" is the output of ncd2xdl.

Cheers,

John

 

[Thomas Reinemann]

Gerd wrote:

Thomas Reinemann <thomas.reinemann@masch-bau.uni-magdeburg.de> wrote:

against the background of partial reconfiguration, I would like to
determine the difference between two initial configurations (NCDs). Does
any Xilinx tool support this?


You are probably looking for
$ bitgen version1.ncd version1.bit
$ bitgen -r version1.bit version2.ncd diff1to2.bit

Ok, I have forgotten to say, it should be human readable.

Tom

 

[John Williams]

Thomas Reinemann wrote:

Gerd wrote:

Thomas Reinemann <thomas.reinemann@masch-bau.uni-magdeburg.de> wrote:

against the background of partial reconfiguration, I would like to
determine the difference between two initial configurations (NCDs).
Does any Xilinx tool support this?



You are probably looking for
$ bitgen version1.ncd version1.bit
$ bitgen -r version1.bit version2.ncd diff1to2.bit


Ok, I have forgotten to say, it should be human readable.

Apart from the graphical representation given by fpga_editor, I think
xdl is the only human readable form of the NCD database.

Did you try the "diff -u" on two xdl files? I'm really curious to see
if you get meaningful output. XDL contains all of the mapping,
placement, routing, everything, in text format, so in principle it
should be possible.

John