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Old 09-29-2010, 05:06 PM   #4 (permalink)
dcb
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I might start with an arduino and maybe some bitbanging on the aldl port and leave the uart port for debugging w/a laptop. The obduino code has some 300 baud bitbanging (at least for output) in it, fyi.

found a little data here on the aldl protocol:
Information on GM's 160 baud ALDL data stream

160 baud is slow enough that a firmware only solution sounds very possible.
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