Heads up code at 0x5800, and Log ram at 0x5000

[Rich Vandervoort]

Sorry I don't have an tech info, but GM has used two types of HUDs for
powertrain development one was used for HC11 type processors (Motorolla, 
machine language) was made by AED the other was for CASM processors (Texas 
Instruments, compiled Modula)was made by DE.  Newer instrumentation may have 
been introduced in the three years since I have been there.  The AED 
instrumentation may be available used, but you need a emulator for the 
processor.  Don't even think about getting the DE instrumentation (read 
proprietary and very expensive).

>Thanks for the info. Marc,
>
>Just for the record, has anyone seen one of these - got a photo,
>or details of the controls?
>

I may get my hands on one in the near future...
i'll keep the list updated.

Brian Green


>Marc Piccioni wrote:
> >
> > GM use an external system to allow the calibration to be changed "on the
> > fly', it plugged into the edge connector on the ECM pcb that on
production
> > systems is potted over.  The heads up system mounted on the dashboard
and
> > has a LCD read out along with a controls to allow trimming of the fuel
and
> > timing curves. Too bad Delco never offer the system to the racing
> > community.
>
>--
>Peter Gargano

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