Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!uupsi!rice!bcm!cs.utexas.edu!wuarchive!cec2!news
From: jab0396@cec1.wustl.edu (John A. Breen)
Newsgroups: comp.lang.vhdl
Subject: Re: Buffer ports
Message-ID: <1991Apr19.181046.19715@cec1.wustl.edu>
Date: 19 Apr 1991 18:10:46 GMT
References: <1991Apr15.152209.29446@cec1.wustl.edu> <1991Apr17.093251.500@rtpark.rtp.semi.harris.com>
Organization: Washington University, St. Louis MO
Lines: 24

In article <1991Apr17.093251.500@rtpark.rtp.semi.harris.com> ward@rtpark.rtp.semi.harris.com writes:
>Posted for Paul Menchini.  Please reply to addresses below.

[I'm forwarding a copy of this to Mr. Menchini, but I didn't want to
break the News thread].

>[T]he [buffer] signal [must] have but one source.
>
>(Rumor has it that buffer ports were originally included to model TTL open-
>collector devices.)

Unfortunately, I don't see how buffer ports help here.  The main
reason for having open collector devices is so that you can tie
multiple sources together.  However, buffer ports won't let you do this.
>
>Internet: mench@clsi.com
>	  mench%clsi.com@uunet.uu.net	(if "mench@clsi.com" doesn't work)
>	  menchin@elmo.el.wpafb.af.mil
>uucp:	  ...!uunet!clsi!mench

-----
John A. Breen 				|  johnb@hobbes.mdc.com
McDonnell Douglas Missile Systems Co.	|  jab0396@cec1.wustl.edu (forwarded ^)
Tel: (314)234-4341