Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!dimacs.rutgers.edu!mips!pacbell.com!att!cbnewsh!yu
From: yu@cbnewsh.att.com (meng-lin.mark.yu)
Newsgroups: comp.lsi.cad
Subject: Berkeley MIS/SIS question
Keywords: don't care, multilevel min.
Message-ID: <1991Jun19.160951.22164@cbnewsh.att.com>
Date: 19 Jun 91 16:09:51 GMT
Distribution: usa
Organization: AT&T Bell Laboratories
Lines: 20

Task:
	I have a truth table, with 0-set, 1-set, and dont cares.  I'd like to
use MIS/SIS to do logic minimization, and hopefully get a good 
multilevel implementation.

Trouble:
	Contrary to  what described in the documents, MIS/SIS doesn't take
the don't cares (output) in BLIF format.  They did take them in the "pla"
format, yet I couldn't find a way/script that seems to use the dont cares.

Question:
	I can't believe that I couldn't use dont cares in such a
logic minimizer.   What did I do wrong?  How can I let the minimizer use
the don't cares (any format)?


Thanks in advance.

-Mark Yu
yu@vax135.att.com