Specifications

CHAPTER 4: SYNTHESIS
CONTROLLING ANALYSIS & SYNTHESIS
ALTERA CORPORATION INTRODUCTION TO QUARTUS II ■ 75
Controlling Analysis & Synthesis
You can use the following options and features to control Quartus II
Analysis & Synthesis:
■ Compiler directives and attributes
■ Quartus II logic options
■ Quartus II synthesis netlist optimization options
Using Compiler Directives and
Attributes
The Quartus II software supports compiler directives, also called pragmas.
You can include compiler directives, such as translate_on and
translate_off, in Verilog HDL or VHDL code as comments. These
directives are not Verilog HDL or VHDL commands; however, synthesis
tools use them to drive the synthesis process in a particular manner. Other
tools, such as simulators, ignore these directives and treat them as
comments.
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For Information About Refer To
Using Synplicity Synplify software “Synplicity Synplify and Synplify Pro
Support” in the Quartus II Handbook, vol. 1,
on the Altera web site
Using Mentor Graphics
LeonardoSpectrum software
“Mentor Graphics LeonardoSpectrum
Support” in the Quartus II Handbook, vol. 1,
on the Altera web site
Using Mentor Graphics Precision RTL
Synthesis software
“Mentor Graphics Precision RTL Synthesis
Support” in the Quartus II Handbook, vol. 1,
on the Altera web site
Using Synopsys FPGA Compiler II
software
“Synopsys FPGA Compiler II BLIS and the
Quartus II LogicLock Design Flow” in the
Quartus II Handbook, vol. 1, on the Altera
web site
Using the Synopsys DC FPGA software “Synopsys Design Compiler FPGA Support”
in the Quartus II Handbook, vol. 1, on the
Altera web site