Hi, I need your help.
I have 4 vhdl source files: A-Package.vhd; A1.vhd; A2.vhd; A3.vhd;
A-Package.vhd is a package defining all common functions and constants used in all other modules.
If the 4 files are in the above order, Modelsim runs them without any errors.
But with Xilinx 8.1i, errors happen.
The following is in more details.
In A1.vhd, it is a top module and there are generic definitions: generic( DATABITS : integer := DATA_BITS; MODEBITS : integer := MODE_BITS; );
A2.vhd and A3.vhd are components called by A1.vhd and have the same generic definitions: generic( DATABITS : integer := DATA_BITS; MODEBITS : integer := MODE_BITS; );
I specify DATA_BITS/MODE_BITS in a global package A-Package.vhd. constant DATA_BITS : integer := 6; constant MODE_BITS : integer := 3;
In instantiations in A1, A2 and A3: generic map( DATABITS => DATA_BITS, MODEBITS => MODE_BITS ) port map( ...);
When running with ModelSim, there is no error, A-Package is first compiled and DATA_BITS and MODE_BITS are specified.
When running with Xilinx 8.1i, there are following warning and errors: WARNING:Xst:616 - Invalid property "DATABITS 6": Did not attach to C0. WARNING:Xst:616 - Invalid property "MODEBITS 3": Did not attach to C0. WARNING:Xst:616 - Invalid property "DATABITS 6": Did not attach to C11. WARNING:Xst:616 - Invalid property "MODEBITS 3": Did not attach to C11. ... ERROR:NgdBuild:604 - logical block 'C0' with type 'ControlBlock_In_0C' could not be resolved. A pin name misspelling can cause this, a missing edif or ngc file, or the misspelling of a type name. Symbol 'ControlBlock_In_0C' is not supported in target 'acr2'. ERROR:NgdBuild:604 - logical block 'C11' with type 'ControlBlock_In_0C' could not be resolved. A pin name misspelling can cause this, a missing edif or ngc file, or the misspelling of a type name. Symbol 'ControlBlock_In_0C' is not supported in target 'acr2'.
The problem is the ERROR MESSAGE DOESN'T CONTAIN THE MISSING OR MISSPELLING PIN NAMES so that I cannot identify what pin is wrong.
I checked my instantiation code, and all pin names are matched. And ModelSim runs without errors.
Thank you.
Weng