cadripper
Newbie level 1
Here is a comparison between several products, this is a rough summary from several design experiences :
Synplify usually yields the best performance and a reasonable gate count, but it is really expensive.
The FPGA Express that was shipped with previous EDA from Xilinx could usually produce smaller design than any other tool, and was ok for performance. Anyway, it is not provided anymore and had a reduced VHDL feature set (like most of Synopsys tools).
XST is getting better, but seems to be greedy in gate count. It is ok for speed-oriented design.
If cost matters, you should try the webpack, which is free. You can find information on Xilinx site : **broken link removed**
Here is a short feature summary, from this page :
"Complete downloadable entry level desktop solution
Supports:
-All Spartan™ II/IIE Families (except XC2S400E and XC2S600E)
- CoolRunner™ XPLA3 / All CoolRunner-II
-XC9500™ Series
-Virtex-E™: V50E - V300E
-Virtex-II™: 2V40 - 2V250
-Virtex-II Pro™: 2VP2
HDL / ABEL synthesis and simulation
XST - VHDL and Verilog synthesis
ABEL v7.5 synthesis and simulation
State Diagram Entry
HDL testbench generation
3rd Party simulation support
JTAG & 3rd party EDA support
Bitstream configuration
Power-analysis software
"
Synplify usually yields the best performance and a reasonable gate count, but it is really expensive.
The FPGA Express that was shipped with previous EDA from Xilinx could usually produce smaller design than any other tool, and was ok for performance. Anyway, it is not provided anymore and had a reduced VHDL feature set (like most of Synopsys tools).
XST is getting better, but seems to be greedy in gate count. It is ok for speed-oriented design.
If cost matters, you should try the webpack, which is free. You can find information on Xilinx site : **broken link removed**
Here is a short feature summary, from this page :
"Complete downloadable entry level desktop solution
Supports:
-All Spartan™ II/IIE Families (except XC2S400E and XC2S600E)
- CoolRunner™ XPLA3 / All CoolRunner-II
-XC9500™ Series
-Virtex-E™: V50E - V300E
-Virtex-II™: 2V40 - 2V250
-Virtex-II Pro™: 2VP2
HDL / ABEL synthesis and simulation
XST - VHDL and Verilog synthesis
ABEL v7.5 synthesis and simulation
State Diagram Entry
HDL testbench generation
3rd Party simulation support
JTAG & 3rd party EDA support
Bitstream configuration
Power-analysis software
"