readback spartan2e

[Turquesa]

I am working with a spartan2e and i wish readback the register, not my
configuration, i read that is posible, i am using iMPACT and it have a
option READBACK, but is always disenable.
Any help is welcome
thanks, Silvia

 

[Chen Wei Tseng]

Hi Silvia,

Are you trying to readback the current value stored in the register?
Currently, iMPACT supports reading back and verifying through BSCAN
interface. To capture the current value in the register, you'll have to
instantiate the capture block. You can learn more about this in XAPP138.

Also, you may want to contact the Xilinx hotline support for detailed
current work arounds solutions using iMPACT/XSVF player to capture the
desired register values.

Regards, Wei
Xilinx Applications

Turquesa wrote:

I am working with a spartan2e and i wish readback the register, not my
configuration, i read that is posible, i am using iMPACT and it have a
option READBACK, but is always disenable.
Any help is welcome
thanks, Silvia