Newsgroups: comp.robotics
Path: brunix!cat.cis.Brown.EDU!agate!howland.reston.ans.net!cs.utexas.edu!utnut!cannon.ecf!chengb
From: chengb@ecf.toronto.edu (CHENG  BENJAMIN)
Subject: miniboard problem...
Message-ID: <CrMF8o.n4L@ecf.toronto.edu>
Sender: news@ecf.toronto.edu (News Administrator)
Organization: University of Toronto, Engineering Computing Facility
Date: Sun, 19 Jun 1994 01:38:48 GMT
Lines: 30

Hello all,

      I have built a miniboard and try to connect it to my XT computer.
      When I download a program to it (hexmon40.s19), the screen says:
      "Download successful
       Board sync error: looking for prompt, got 0
       Synchronizing with board
       Board not responding
       .       .      .
       .       .      .
       .       .      .
       Synchronizing with board
       Board not responding"

      Can anyone tell me what's the possible reasons for that. I have
      traced the whole circuit board and it should be ok. Futhermore,
      when I slice the Download/Run Switsh to either position, the miniboard
      can always accept the program (indicated by "Download successful").
   In addition, when I connect the miniboard (without power) to my computer,
      the green LED labeled RCV hasn't lighted. I even exchanged the
      transmit and receive data pin (pin2 and pin3) from the serial adaptor,
      but still get no success. I just worry about I connected something
      wrong and burned the 6811 CPU. If someone has any suggestions or
      comment, please post here or email directly to me and I will very
      appreciate that. Thank you very much.

						     Benjamin Cheng
						 (chengb@ecf.utoronto.ca)


