CAD-Tutorial - EECS427 Fall 2003 The Design and Simulation...

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EECS427 Fall 2003 The Design and Simulation of an Inverter Mentor Graphics Tutorial This tutorial has been devised to run through all the steps involved in the design and simulation of a CMOS inverter using the Mentor Graphics CAD tools. Before invoking the Mentor Graphics tools it is essential to first set up the environment under which these tools will be used throughout the semester. Setup For the remainder of the course you will be working in your EECS 427 class directory which will store all the files that you create. Since Mentor files occupy a large amount of space it is essential that you work in your class directory otherwise your home directory quota will be quickly used up. To avoid typing long pathnames, a link called eecs427 is automatically created in your home directory when your class directory is set up. This eecs427 link points to your class directory and hence, you can change to your class directory from your home directory simply by typing: % cd eecs427 Note: The % symbol indicates the UNIX prompt of the c-shell and is usually preceded by the name of the machine you are working on. LMB, MMB, and RMB refer to the left, middle, and right mouse buttons. The LMB is always used for clicking on, selecting, and positioning components, shapes within the various Mentor programs, and for OK/ NO/Cancel operations in user interface items like dialog boxes, prompt bars, etc. The RMB is pressed to bring up the various pop up menus. To get help at any time, click the menu Help > Open Bookcase in Mentor applications. The on-line documents use Acroread’s search capability which often has problems when an index resides in afs. If you get bus error or segmentation fault pop-up windows when acroread opens, just close those windows. Also, you may have problems exiting acroread when this happens. If so, you can get rid of the acroread process by finding its process id with "ps -efl | grep acro" and killing it with "kill -9 <proc_id>". First, select the proper version of the Mentor Graphics package. Do this with % swselect & If you see Mentor Graphics on the right side of the window, click on it and select Unselect Package . Then, regardless of wether the Unselect Package step was necessary, click on Mentor Graphics in the right half of the window and then choose Select Package and select version D.1 in the pop-up window and select Okay . Then exit from swselect . To update the changes, type: % source ~/.software Next, open your .cshrc file, which gets read every time you log into a machine. Do this using the text editor of your choice (nedit, emacs, vi, etc.) % nedit ~/.cshrc Next, add the lines setenv AMPLE_PATH ~/ mgc/ample setenv TSMC25 [enter your directory] /usr/caen/generic/mentor_lib-D.1/public/eecs427_tsmc25 set path=($TSMC25/bin $path) to the bottom of that file. The first line creates a link to the mgc file. The second line creates a link so you can use the $TSMC25 variable as a pointer to [directory]. The next step is 1
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CAD-Tutorial - EECS427 Fall 2003 The Design and Simulation...

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