[Diy_efi] Mopar PCM

[biob dobbs]

What program is this you are looking at disassembling, that j(some number) 
program from daimler chrysler?


>From: "David Cooley" <n5xmt at bellsouth.net>
>Reply-To: A list for Do-It-Yourself EFI <diy_efi at diy-efi.org>
>To: <diy_efi at diy-efi.org>
>Subject: Re: Re: [Diy_efi] Mopar PCM
>Date: Wed, 27 Oct 2004 17:10:55 -0400 (Eastern Daylight Time)
>
>Hmm... I do have a disassembler for windows programs!
>
>-------Original Message-------
>
>From: A list for Do-It-Yourself EFI
>Date: 10/27/04 16:02:24
>To: A list for Do-It-Yourself EFI
>Subject: Re: Re: [Diy_efi] Mopar PCM
>
>Anyway to reverse engineer the application I sent you to see how Chrysler
>accesses the flash via SCI? Data logger maybe?
> >
> > From: "David Cooley" <n5xmt at bellsouth.net>
> > Date: 2004/10/27 Wed PM 12:52:31 GMT
> > To: <diy_efi at diy-efi.org>
> > Subject: Re: [Diy_efi] Mopar PCM
> >
> >  As I said, even the factory flash file looks identical to what is in 
>the
> > flash proms... it is both flash concatenated into a single file with a
> > checksum so the DRB can check for file corruption before it applies the
> > flash.  The flash appears to be strictly data, and no code at all.  I
>ihave
> > to set up SCI direct to the CPU's to see if I can dump the ROM.  Once I 
>do
> > that I will have a better idea what is going on...  and the info I have 
>is
> > not speculation...  I have received it from a person that works for a
> > company that assembles, programs, reworks and tests the PCM's for 
>Chrysler
>
> > 96 and newer Chrysler PCM's are a totally different animal than the 95 
>and
> > earlier units.
> >
> >
> >
> > -------Original Message-------
> >
> >
> >
> > From: A list for Do-It-Yourself EFI
> >
> > Date: 10/26/04 22:42:52
> >
> > To: diy_efi at diy-efi.org
> >
> > Subject: Re: [Diy_efi] Mopar PCM
> >
> >
> >
> > again a dump wont do you any good. every piece of chyrsler code ive ever
> > seen has a copyright in asccii test at the bottom of the rom. these do 
>not
>
> > the only clear reasoning is that the adress line are muxed or something
> > during programming. this is not even remotely beyond the capability of 
>the
> > 68hc vriants running in these ecms.
> >
> >
> >
>
>
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