Description
The
CASCADE2 and CASCADE4 primitives are created by the LeonardoSpectrum software during synthesis and are not supported by the MAX PLUS II software. Therefore, they are not inside the Exemplar Library Mapping File (.lmf, <MAX PLUS II installation directory>\lmf\exemplar). These primitives produce error messages when reading the EDIF Netlist file from the LeonardoSpectrum software. To avoid this problem, do the following:
- Select Variable Editor (Tools menu) within the LeonardoSpectrum software.
- Select the Show Advanced Variables window.
- Select altera_use_cascades from the variable name window.
- Change the variable value to FALSE and select OK.
If you are using batch mode, you can add the following variable when reading the design:
files: -nocascades
After making this change, the LeonardoSpectrum software will no longer uses cascade functions when technology mapping to FLEX® devices. A future version of the software will correctly use cascade functions.