Are there any equations, how to calculate the frame address and the
frame offset out of the X, Y etc. position of the flip-flops or do I
have to re-engineer them out of the ll file?
Heiko
Reply by ●November 23, 20052005-11-23
Hi John,
thanks for you advice. Actually, I knew the -l option and I worked with
that for months, but I could not remember that the frame address and
offset is in there as well. Do you also have an idea in which frame at
which offset to put the a new value for each flip flop, so that after
downloading the manipulated bitstream to the FPGA and asserting reset,
you have restored a previous state. I will try to mail to the other
mailing list as well.
Heiko
Reply by John Williams●November 23, 20052005-11-23
Hi Heiko,
heiko@csse.uwa.edu.au wrote:
> I am dealing with reconfigurable computing and relocating modules
> within a Virtex-II FPGA. In order to save and restore the current
> flip-flop states I need to determine where to find the states in a
> readback stream. All necessary equations were provided in xapp151, but
> only for the Virtex not the Virtex-II FPGAs. Given the row and column,
> as well as the slice and FF, I would like to know the frame and the
> offset within the frame where to find the flip flop state.
The "-l" option to bitgen will give you an ASCII Logic Allocation file,
that gives you these sort of details.
Hi,
I am dealing with reconfigurable computing and relocating modules
within a Virtex-II FPGA. In order to save and restore the current
flip-flop states I need to determine where to find the states in a
readback stream. All necessary equations were provided in xapp151, but
only for the Virtex not the Virtex-II FPGAs. Given the row and column,
as well as the slice and FF, I would like to know the frame and the
offset within the frame where to find the flip flop state.
Is there anyone who can help.
Regards
Heiko