simulation and modelling of complicated mirco-electronic circuits. This work provides worked examples and problems related to VHDL. The key feature of this edition is material on the VHDL93 standard by Zainalabedin Navabi. As known you want free software to simulate/synthesize the vhdl code? both xilinx and Altera provide free version of their synthesis tool for download. xilinx has their webpack while altera gives you their quartus. for simulation you can download modelsim light version from modeltech.Download Free Vhdl Modular Design Navabi Vhdl Modular Design Navabi ... VHDL Design Tool Design Methodology VHDL Overview Structure of VHDL Simulation Model Combinational Circuits Sequential Circuits Testbench Development Control-Data Partitioned Designs Design of RTL Embedded Cores CPU RT Level Design CPU Memory Indtruction Level Testing SoftwareAbout the author (1997) Zainalabedin Navabi