Programming 101 from CSH HQ PART 1

[Mike Dillon]

 Bruce,

	The more we are able to get at the easier our jobs could be,
 I don't have a real preferance on the ecm, but if what you say about
 the 730 having all the code in the PROM, we could have all to code 
 to dissassemble this should allow better understanding of what GM is 
 doing, after that doing the 747 or any other GM ecm sould be a snap
 as we could make much better assumtions when looking at the data.
 Do you have a referance as to what cars-trucks and years the 730 was used ??
 If I can get one I could dump the PROM and run it though the dissassmebler.
 Is any one sure the the code in the GM proms is based on 68XX ?
Thanks Mike D.

> From diy_efi-owner at esl.eng.ohio-state.edu Thu Mar 26 13:12 CST 1998
> From: "Bruce Plecan" <nacelp at bright.net>
> To: <diy_efi at efi332.eng.ohio-state.edu>
> 
> Before firing off letters, please wait a while, so any follow 
> up information can take place.  I have a problem, that can
> take me away from writting, and I may get short to close
> a point.  
>   
> Well here we go.
>   First, this is for educational purposes only.
>   What I say here is just what others have told me.  I have
> no formal training in electronics, or engineering, so it might
> all be wrong, and I'd expect with the folks here I'll be corrected
>   If someone tries these methods/information it would be for
> Off-Road use only.  Various laws are in effect for modifing
> vehicles, and maybe illegal.  It is you the reader to figure out the
> laws in your area.  The training I have is vocational, auto repair.
>  
> OK, I have enlisted some really good software types, but can
> use a few more.  If anyone wants this job it's their's for the asking.
> So it's my way, ya got an idea e-mail me.  Find an error e-mail
> me or post it.  I may say some things just to make life easy 
> for the non-whatevers.  From a general understanding point
> it don't matter if the reader starts at 000000, and stops at
> FFF, or reads down from FFF to 000000,  OK.  If ya wanna
> nitpic we'll never get anywhere...  
>   We need people to do the following:
> 1.  Breadboard a EFI on a bench using ecms that are picked
>      by the group.
> 2. Some volunteers who have a car/truck and can burn
>     chips to test drive things, perferably with a scanner.
> 3. People who can/do visit recycling centers.
> 4. Parts trackers.
> 5. Thinkers, EE+ME, and folk who spin wrenches.
> If ya wanna lurk fine, but when things get thick, remember
> where you were when I asked for help which is what I'm
> doing.
>   As things stand right now, it looks like the 1227747, then
> 1227730, 1227165, Ford, and Foreign types.  If we get that 
> far.  Without participation this is all a mute point..
>   Ya wanna change the order, again e-mail me.
> My reasons are as follows.
>   747 easiest, but limited, if we can't do this we sure as hell
>           can't do the next.  32K chip
>   730 MAP, all code on chip, uses tables, 256K chip
>   165 MAF, 128K chip.  Close decision from #2. Popularity
>           wise. 
> Ford,  with the above under our belts, then working on this
>      one should be easier.  If someone has some shareware 
>      about the ford system please start organizing it.
> Foreign, basically Bosch (?).  Outta my league on this
>       been years since doing Mag. Mar..  Need help with
>       this also, anyone wanna take the lead, on this think
>       about it.
> If someone knows about electric shifting trannies, please
>       organize some notes.  All I know of for a stand alone
>       is the GM Diesel PCM. 
> That Is All
> Bruce   nacelp at bright.net     The Cone Shaped Hat
>       Headquarters may appear closer than ya think   
> 
> 
>