RX buffer credit allocation - performance for received requests" (rxbuffer_rxreq_hwtcl) <selection>" is out of range: "Minimum", "Low", "Balanced" - RX buffer credit allocation - performance for received requests" (rxbuffer_rxreq_hwtcl) <selection>" is out of range: "Minimum", "Low", "Balanced" Description This error message is displayed when opening a Quartus® II v13.1.4 Qsys system in Quartus® II v14.0 or later if the system has an Altera® Avalon®-MM Hard IP for PCI Express® with High or Maximum RX Buffer Credit Allocation chosen. In addition, when parameterizing the Avalon-MM Hard IP for PCI Express in Quartus® II v14.0 or later, the High and Maximum settings for the Rx Buffer Credit Allocation are not available. Resolution Altera® found performance issues with the High and Maximum settings in the Avalon-MM variants. Consequently, these settings have been removed for Arria® V GZ, Arria® 10, and Stratix® V devices from Quartus® II software version 14.0. These same parameters are scheduled to be removed for Avalon-MM variants in Arria® V and Cyclone® V devices in a future software release. This change will be reflected in a future version of the user guides. Related Articles Why are some of the Rx Buffer Credit Allocations missing on the Avalon-MM Hard IP for PCI Express? Custom Fields values: ['novalue'] Troubleshooting NA False ['novalue'] ['FPGA Dev Tools Quartus II Software'] novalue 14.0 ['Arria® V GT FPGA', 'Arria® V GX FPGA', 'Arria® V GZ FPGA', 'Arria® V ST FPGA', 'Arria® V SX FPGA', 'Cyclone® V GT FPGA', 'Cyclone® V GX FPGA', 'Cyclone® V SE FPGA', 'Cyclone® V ST FPGA', 'Cyclone® V SX FPGA', 'Arria® 10 GT FPGA', 'Arria® 10 GX FPGA', 'Arria® 10 SX FPGA', 'Stratix® V GS FPGA', 'Stratix® V GT FPGA', 'Stratix® V GX FPGA'] ['novalue'] ['novalue'] ['novalue']