Missing documentation for R-Tile Avalon Streaming FPGA IP for PCI Express

Hi dc3 

Thanks for reaching out.

• In general, you can search Altera documentation here: https://docs.altera.com/
• We also provide the PCIe Support Center page with PCIe resources and documentation: https://www.altera.com/design/fpga-ip/pcie-support   

It appears the broken link you encountered came from the path: PCIe Support Center > FPGA R‑Tile Avalon Streaming IP for PCI Express User Guide. 
I see the same error on my side. I will report it to the appropriate team to have the link fixed. Thank you for your prompt feedback, we appreciate it.

In the meantime, here is the documentation link you requested for the R‑Tile Avalon Streaming IP for PCI Express User Guide: https://docs.altera.com/r/docs/683501/25.1.1/r-tile-avalon-streaming-ip-for-pci-express-user-guide/about-the-r-tile-avalon-streaming-ip-for-pci-express 

Please let me know if you have any questions or concerns.

Thanks.
Best Regards,
Ven