Re: Debugger board for P4 ECMs

["Walter Sherwin" <wsherwin@idirect.com>]

What steps, in general overview type terms,  would a person have to go
through in order to adapt this board as a plug-in style emulator within an
ECM/PCM controlling a running engine?  Could a person execute real time
edits, or would a person have to power down the engine and/or target
processor to edit, and then power back up to resume testing?

Walt.



>The timer chip on the board is useful for simulating EST, MAF, VSS, and
>VATS signals.  Because it uses the same clock as everything in the ECM,
>any ECM timer values will be rock solid steady.
>
>This board could be used on an ECM running an engine.  You'd get a
>serial interface to a laptop separate from the ALDL interface.  This
>would require grafting debugger software onto GM's software.


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