AR# 2010: Foundation XVHDL: message "No entity bound to this instance"
AR# 2010
Foundation XVHDL: message "No entity bound to this instance"
Description
KEYWORDS: foundation vhdl entity instance bound URGENCY: standard
General Description: While synthesizing an XVHDL design in Foundation, the following warning may appear in the Project Manager (and in Synthesis -> View Report):
component: U1 : No Entity bound to this instance.
解决方案
This warning will be issued whenever XVHDL cannot locate a VHDL description of an instantiated component.
There are two cases when you can safely ignore this warning:
1. You have instantiated Xilinx primitives in your VHDL source.
2. You have created the netlist file for the instantiated component. Examples are:
2a. You have compiled the VHDL source for the component separately. 2b. The netlist for this component comes from a non-VHDL source (schematic, ABEL, Logiblox, etc.)
In this case, TRANSLATE will combine the netlist files correctly, as long as all netlist files are copied into the project directory and are named correctly.
If neither of these conditions applies, make sure that all VHDL source files are visible to the XVHDL compiler:
1. If this is a top-level VHDL project, add all of your .VHD files to the project (in Project Manager, select Document -> Add).
2. If this is a VHDL macro, declare all lower-level VHDL files as user libraries.