Re: Lattice Mach CPLD - Leonardo Spectrum vs. Synplify

"David Brown" <[EMAIL PROTECTED]> wrote in message news:<[EMAIL PROTECTED]>...
> I'm using the downloadable version of ispLever for a verilog project on a
> Lattice Mach 4 CPLD chip.  The software has both Synplify and Leonardo
> Spectrum available for synthesis.  I can build the code (so far, anyway)
> with either tool.  Is there any reason why I should choose one over the
> other?

Well, the full-up version of Leonardo lets you set Verilog parameters
from the GUI or from a TCL script, whereas Synplify does not.  This
makes parameterized designs impossible in Synplify, so that tool's
disqualified until that very important feature is added.  (Ummmm,
haven't parameters been a part of the language since the beginning???)

Leonardo does not (and will never) support Verilog 2001 whereas
Synplify does.  If this matters to you, then your choice is obvious.

Mentor Graphics is replacing Leonardo with their new Precision
Synthesis tool, which does have V-2001 support, but it's not clear if
a "lite" version will be offered via the FPGA vendors.

-a