Re: [UrJTAG-dev] How to configure FPGAs and PROMs

[Colin O'F. <co...@ne...>]

I forgot to answer your specific question: you need to replicate ALL the
commands you are doing in Impact. You should be able to manually create a
SVF file graphically (see http://www.youtube.com/watch?v=Sp02GEPfooY&hd=1
for example).

Most likely your SVF file you created is incomplete. For example you need to
specify erase/program cycles etc. See the impact documentation to get all
the batch mode commands.

When doing it graphically you will be able to see a list of what impact is
doing too, so you can just use that as a basis for your batch mode file.

This should work fine then. I've programmed attached SPI flashes, which
means the SVF file includes downloading the access core, doing the SPI
access through that core, etc.

-----Original Message-----
From: Torsten Wagner [mailto:tor...@gm...] 
Sent: November-10-12 11:37 AM
To: urj...@li...
Subject: [UrJTAG-dev] How to configure FPGAs and PROMs

Hi,

my first post to this list. So sorry if it sounds stupid.

How to configure a PROM or FPGA via urjtag?

At the moment I work with chips from Xilinx and from Xilinx own tool
"impact" I can set different configuration options. However, those are NOT
part of a generated SVF file.
They are included in the impact project file (ipf).

Just copy over the svf file is therefore not enough. One has to make sure
PROM or FPGA are correctly configured.
Impact does this in some way. E.g. I have a FPGA with a PROM and need to set
the "FPGA load" option under impacts programming parameters.
I can copy over the SVF file from both impact or urjtag, however the FPGA
only starts up if the PROM was copied over by impact, since it takes care to
set the "FPGA LOAD" flag which is important.

How to do this within urjtag?
There is the instruction command and some others and I tried a bit around
but couldn't see how this should work.

Thats the last part on a quest to get all this working under a Linux
environment with the Busblaster from Dangerous Prototypes.

As a random side question. I noticed that the SVN repository seems to differ
rather much already from the last release. Is there schedule for any
upcoming release?

Thanks

Torwag

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