hmm... iiii... don'tknow! i can simulate AHDL in modelsim same way i do with verilog. or mixed verilog - ahdl project, also simulates perfectly. modelsim needs a netlist of logic gates it does not care about language (i think). and company i work in produces competitive modern hardware on worldwide market. in it, FPGA s (cyclone 4. 115 000 cells) nearly 100% is programmed in AHDL. but i agree that it is an old language and kinda has a prehistoric style synthax :) working with it feels like working with a dinosaur :) and yes it may make me non employable. but trust me if you compare verilog's synthesis stability and AHDL 's synthesis stability, AHDL proved through years that it's synthesis is always correct while verilog may synthesize something away only because the module was copied in a more dense project and compiled. i know you don't believe me but. nobody did before they copied my module. we all had eyes on out foreheads. how is this possible but it is. of course it could be my lack of knowledge and bad coding but i usually run after each register and it's timing. and it worked great on lighter projects where only 20% of fpga was used. as fitter sees that resources are on limits, say close to 90%, the synthesis and fitter simply chews away verilog module parts. again, forgive me if my incompetence makes me say incorrect things... but i am sure many people have observed the same things with verilog. tricky... you are a moderator here so.. your suggestion has a value because you work for altera. so is it true? that altera is planning to withdraw AHDL? that would be a big mistake i think.companies like mine are welded to altera and they can't even look away from it. because of AHDL. xilinx users are also welded to it because of xilinx programming language (i forgot it's name). by withdrawing AHDL altera will simply force people to jump on verilog. which will open their hands -to more freely slide between altera and it's competitors (according to whoever places cheaper prices on better products). you own us guys :D and you are planning to let it go? well i don't know :)))