PMW signal mesa 7I76

Hello everyone.
I have a 7i76 board and I don't use the step 5 generator, and I also have several free outputs.
What is the firmware on the FPGA board that has 4 step generators and a PWM generator. And how to install it on the 7i76 board.

Do you have a 7I76 or 7I76E?
 
For a 7I76E, you would use 7i76e_7i76x1pD.bit firmware which
replaces the last stepgen with a PWMGen.

If you have a 7I76 + a FPGA card, the firmware depends on the
FPGA card used.

In either case, you use the mesaflash utility to update the firmware.
 

Thanks for answering.
I have a 5i25 + 7i76 card
Updated to LinuxCNC 2.9.

5i25_7i76x2_2pd.bit

Would be the correct firmware, This is in the 5i25.zip file from Mesa
 to write the firmware to a 5i25 card you would unzip the 5i25.zip archive
then cd to the new configs/hostmot2/ directory, and run this command:

sudo mesaflash --device 5i25 --write 5i25_7i76x2_2pd.bit --reload

Update the firmware according to your instructions:
sudo mesaflash --device 5i25 --write 5i25_7i76x2_2pd.bit --reload
Everything went well without any errors.
In PNCconf the option to change a step generator for a PWM generator is disabled. Am I doing something wrong or do I have to change something in the hal file manually.

Unless pncconf specifically supports that firmware,
You will have to setup the PWMgen by hand in the hal file.