fwd: Info on GM Vehicle Computers
John S Gwynne
jsg
Thu Jun 1 13:51:30 GMT 1995
Please send postings to diy_efi at coulommb.eng.ohio-state.edu. Thanks.
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From: "David Allen" <allent at news1.mnsinc.com>
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Date: Wed, 31 May 1995 23:51:47 -0400
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Subject: Info on GM Vehicle Computers
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I am seeking basic information on reading and decoding the single
line serial output data of the Assembly Line Diagnostic Link (ALDL) in my
1988 Chevy Van. Although interestting, I am not as concerned about
modifying the EPROM or getting at the CPU innards or operation -- I
just want to know how I can deciper the data stream. It seems it
should be a repetitive or cyclic data burst marked by framing bits.
Any steer or information you could shed on this would be appreciated.
I would like to fiddle with decoding the data and perhaps using some
Visual Basic, providing a windows-based readout, as close as possible
to real-time.
Many Thanks,
Dave Allen
WA2BSL
allent at mnsinc.com
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