Subject:
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Re: HB bootstrap problem when U6 installed
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Wed, 3 Feb 1999 21:21:24 GMT
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Original-From:
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Kat <khorvath@up.+stopspam+edu>
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Viewed:
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1110 times
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Originally I had problems putting my Handy Board into bootstrap mode. The
problem seemed to be that we had the wrong power source, and had to keep
it in zap mode for it to work properly.
On Wed, 3 Feb 1999, Greg Starr wrote:
> One of my students is having a problem in assembling their HB:
>
> Downloading and executing IC works fine _until_ U6 is installed. After
> installing U6 ('138) the GRN LED doesn't quite go off when putting the
> board in bootstrap mode, it glows faintly. And we can't download the
> bootstrap.
>
> If U6 is removed, everything is fine, the GRN LED goes off when put in
> bootstrap mode, all downloading is fine.
>
> We did have to change 6811s to get this far (original one didn't work), but
> it seems solid now, but only if U6 not installed.
>
> Any suggestions?
>
> --greg
>
> *****************************************************************
> * Greg Starr, Professor *
> * Department of Mechanical Engineering ph (505) 277-6298 *
> * University of New Mexico, Albuquerque NM 87131 FAX 277-1571 *
> * email- starr@unm.edu WWW- http://www.me.unm.edu/~starr/ *
> *****************************************************************
>
>
>
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Message is in Reply To:
 | | HB bootstrap problem when U6 installed
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| One of my students is having a problem in assembling their HB: Downloading and executing IC works fine _until_ U6 is installed. After installing U6 ('138) the GRN LED doesn't quite go off when putting the board in bootstrap mode, it glows faintly. (...) (26 years ago, 3-Feb-99, to lugnet.robotics.handyboard)
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