Path: utzoo!mnetor!uunet!lll-winken!lll-lcc!lll-tis!ames!pasteur!agate!ig!uwmcsd1!bbn!rochester!udel!burdvax!sol!floyd
From: floyd@sol.PRC.Unisys.COM (Floyd Miller)
Newsgroups: comp.lsi
Subject: Re: Magic extraction (scmos)
Message-ID: <5575@burdvax.PRC.Unisys.COM>
Date: 24 Feb 88 03:35:57 GMT
References: <3446@super.upenn.edu>
Sender: news@PRC.Unisys.COM
Lines: 14
Summary: A possible solution


Magic's extractor, like Mextra, supports transitor attributes
which are labels with special syntax attached to the drain source or
gate of the device.  These attributes are also passed from the .ext
file to the .sim file by ext2sim (at least my version does this).

Using these attributes and modifications to Esim I have been able to
have the simulator attach specified transitor nodes other than as it
appears in the layout or ignore a transitor completely (as may be
needed to get around simulation problems).  

The same technique could be used in a pre spice processor to recognize
certain attributes that could specify which transistor node should really
be the drain and even where the substrate node should be connected in the
spice model.