Why does the Quartus® Prime Pro ignores the library definitions for VHDL entities with identical names? - Why does the Quartus® Prime Pro ignores the library definitions for VHDL entities with identical names? Description Due to a problem in the Quartus® Prime Pro Edition Software version 18.1 and earlier, you may see library definitions for VHDL entities with same name are ignored and a single entity is used in multiple instances irrespective of each entity is defined to separate libraries. Resolution To work around this problem, use unique name for each entity in VHDL. This problem is fixed starting with the Quartus® Prime Pro Edition Software version 19.1. Custom Fields values: ['novalue'] Troubleshooting 595128/ 2205696060 False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro'] 19.1 18.1 ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']