Newsgroups: comp.robotics
Path: brunix!cat.cis.Brown.EDU!agate!ihnp4.ucsd.edu!swrinde!pipex!uknet!EU.net!uunet!psinntp!unvax.union.edu!tardis.union.edu!saunderb
From: saunderb@tardis.union.edu (Breton Saunders)
Subject: HELP! 68HC811E2FN Not behaving properly in Expanded Mode
Message-ID: <saunderb.770139245@tardis.union.edu>
Sender: news@unvax.union.edu (USENET News System)
Organization: Union College, Schenectady, NY
Date: Sat, 28 May 1994 15:34:05 GMT
Lines: 15

Hi All,

  I need help.  I have built a basic expanded mode system, and the 68hc811E2 is
not behaving properly.  When I power it up in expanded mode the address bus 
turns into a counter.  I know that this happens when one runs a test 
instruction in special modes, but should this happen in expanded mode?  I also
have not yet installed bus termination (10k resistors) nor pull-ups on some of 
the inputs (I am going to do this asap) but the chip should function to some 
extent though?  If you have any suggestions they would really help out, as my
assignment is due on monday.


			-Brett Saunders
			 saunderb@tardis.union.edu

