Subject:
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Re: Firmware download troubles
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Newsgroups:
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lugnet.robotics.rcx
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Date:
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Tue, 10 Dec 2002 04:24:04 GMT
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Reply-To:
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Dick Swan <DICKSWA@SBCGLOBAL.NETspamless>
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Viewed:
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4023 times
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The low buzz tone is an error generated by the ROM firmware for
failure condition detected as part of the "unlock firmware" opcode.
There are two causes of this. [1] ROM software calculates a checksum
value of the downloaded firmware and this mismatched against a
checksum sent from the PC or [2] the "do you knock if I byte" string
was not found in the downloaded code.
In either case, assuming the downloaded file was not corruptto begin
with, it indicates a transmission failure during one of the download
packets that was not detected by the PC.
"Matt White" <mwhite@silenus.com> wrote in message
news:H6vEs2.7tB@lugnet.com...
> Also:
>
> When it seems to get to the very end before the error appears, I • sometimes
> get a long (3-4 seconds) low tone from the RCX.
>
> Matt
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