Newsgroups: comp.robotics
Path: brunix!sgiblab!spool.mu.edu!torn!newshub.ccs.yorku.ca!newshub.ariel.yorku.ca!cs911225
From: cs911225@ariel.yorku.ca (KEN E WILLMOTT)
Subject: HC11 board design
Message-ID: <1993Sep19.135642.22263@newshub.ariel.yorku.ca>
Sender: news@newshub.ariel.yorku.ca (USENET News System)
Organization: York University, Toronto, Canada
Date: Sun, 19 Sep 1993 13:56:42 GMT
Lines: 16

>Recently Marvin Green of the Portland (or) Robotic Society (PARTS) 
>cam up with a beautiful single chip design using the 68HC11. His printed 
>circuit board measures 2X2 inches and has only the 52 pin PLCC, a xtal 
>three resistors 4 caps, 1 -20 pin input output header, 4 servo headers 
>and various other headers for connection to the power supply and serial 
>port. The complete design in on PLYON BBS 206-633-2905 (Over 10 megs of 
>......

Really? How did he get away without the extra 21 pullup resistors?
Even if you had a way to eliminate the ones on port C, you'd have
IC1, IC2, IC3, Rxd, MISO, the 10 meg across the xtal, STRA...
etc. etc.

Did you just forget to mention them?

	-Ken Willmott
