Hi , i am a another alliance user.. i am a grad student specialising in VLSI.. I came up with this tool to design my own chip.. but before that I was trying to set the environments and also to run one of yor tutorial addaccu ( adder accumulator ) I was basically stuck in certain portions.. i initialy set all the environments and simulated commands like asimut -b addaccu etc.. which worked perfectly.. the problem came in the program called addaccu.c when i compile the addaccu.c there was an error in the " clk" signal ... intancing pck_sp the error was *** mbk error *** addlions impossible : connector number discrepency between pck_sp and instance 13 in figure addaccu ... I had no idea what does that mean ??????? so first I commented those lines of clk in addaccu.c commentinf LOINS.....pck_sp details.. those showed the clk signal details I think... then when i ran asimut addaccu addaccu schema all files are compiled till pi_sp.vbe the erros came were seraching patter file : 'addaccu' PAT : Warning 101 line 13 : file is empty => old pat format is assumed restoring Error 109 : signal ' cki' never assigned Warning 3 : signal ' ck ' never used cannot continue further files to be checked addaccu.c , pck_sp*.* these were the problems.. so i need a correction on the above in addaccu.c file in order for me to proceed further .... waiting for your reply Viswanath Manikandan Viswanath Off/College Res: Clarkson University 34-1/2 Market Street ECE Dept., Potsdam P.O. #5722 New York Potsdam, Newyork -13699 NY-13676 Ph . : 315 268 3764 Ph : 315 265 3799