Subject:
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Yup, it works.
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Mon, 3 Jun 1996 19:12:48 GMT
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Original-From:
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Chuck McManis <CMCMANIS@NETCOM.COMsaynotospam>
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Viewed:
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1748 times
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Well after much delay, I've finally got my first HandyBoard up and
running. (I've got another one in parts, but that is a different
story) I can confirm that HBDL.exe does *NOT* work on my 133Mhz
Pentium under Windows '95. It does work on my 486/33 laptop under
windows 3.1. I've not tried it on my 75Mhz pentium because I would
have to move that system into my lab which was too much trouble at
the time.
I had a horrible time with the LEDs. The instructions weren't clear
until I read them about three times. About 3 of my LEDs were in
backwards. [Note to potential kit builders, the Radio Shack $8.99
desoldering iron is worth its weight in gold! Especially when you
want to do this type of rework]
I also managed to get one of the tantalums (the 4.7uF in the memory
power supply) in backward and took out the regulator and the cap when
I tested it. (that is why you need two kits, one for spares on the
parts you toast :-()
Editorial alert: There is a typo in the instructions for building
the interface board that claims you want to use the tantalum caps
for it, you want to use the electrolyic 4.7uf caps. This isn't a
big deal since the silkscreen makes this obvious. Also the serial
test didn't work, (testing voltages on the serial port) since the
voltage at pin 2 was -10v, but the voltage at pin 6 (10v) worked
fine to illuminate the LED. This could be due to the serial LED
being reversed.
I really, really, want more I/O on this thing. In particular digital
outputs.
Nice build manual with pictures. It would be really nice if all of
the pages were packaged into a single tar file I could download and
read "offline". That way I wouldn't have to stay dialed up to work.
Finally, I couldn't find the source to hbdl.exe and dlm.exe didn't
work so I assume there are differences. Is the boot protocol (sans
hardware echo) the same? If so is there a copy of bootladr.asm
that I can use or should I re-use the one I have for the miniboard?
I really need to have this up on my pentium since the lap top is
not available at all times.
--Chuck
--
Chuck McManis http://www.professionals.com/~cmcmanis
Director System Software, FreeGate Corp. cmcmanis@netcom.com
All opinions in the non-included text above are those of the author and
not of his employer or avocado plant.
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Message has 1 Reply:
 | | Re: Yup, it works.
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| (...) I really tried hard to make this clear -- can you explain the difficulty you had? (...) Yup, you are right. You are either the first person to notice this, or the first to report it! (...) Quiescent RS-232 levels are -10v, so the minus voltage (...) (28 years ago, 3-Jun-96, to lugnet.robotics.handyboard)
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