Newsgroups: comp.robotics
Path: brunix!uunet!stanford.edu!CSD-NewsHost.Stanford.EDU!killdeer.Stanford.EDU!mark
From: mark@killdeer.Stanford.EDU (Mark Hosang Yim)
Subject: Re: 6811 - Downloading a monitor program
Message-ID: <1993Jan15.180921.23982@CSD-NewsHost.Stanford.EDU>
Summary: use special bootstrap mode, pcbug is useful 
Keywords: 6811 pcbug
Sender: mark@killdeer.stanford.edu
Organization: Robotics Lab. Stanford University
References: <1j68tjINNjbr@coral.bucknell.edu>
Date: Fri, 15 Jan 1993 18:09:21 GMT
Lines: 22

In article <1j68tjINNjbr@coral.bucknell.edu> rose@bucknell.edu (philip rose `94) writes:
...
>board.  First, I need to download a monitor program that will control the
>downloading of other programs.  My problem is that I don't know how to perform
>the initial downloading of the monitor program when there are no programs
>resident in the 6811 board's RAM.  I need to solve this problem without the
>addition of an EPROM chip to the 6811 board.
>
>Any help would be greatly appreciated.
>Please send responses to rose@coral.bucknell.edu

You can use the special bootstrap mode (moda low, modb low) download a
tiny 256 byte program (for E2 and A8 version) that will download or
communicate with your host.  This is what PCbug does. PCbug runs on an IBM
PC, does all the things BUFFALO does and more.  Very nice program.
I'm pretty sure PCbug can be had from motorola's bboard.

Does anyone know if the source to PCBug is available somewhere?

Thanks
mark
mark@killdeer.stanford.edu
