Date: Sun, 16 Sep 2007 18:59:16 -0400
Reply-To: pdooley <psdooley@VERIZON.NET>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: pdooley <psdooley@VERIZON.NET>
Subject: Re: ECU firmware location
In-Reply-To: <1b0df96d0709161427k72c05df2u7f8f9fdda298567a@mail.gmail.com>
Content-type: text/plain; charset=us-ascii
Ahhh, but you are trying to reverse engineer it.
That would lead me to believe you plan on building an upgraded or perhaps
more durable unit.
Either way, please continue. It makes for good reading:)
-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
tinker man
Sent: Sunday, September 16, 2007 5:27 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: ECU firmware location
You got me wrong...
I wasn't planning to re-invent the wheel (i.e. design and build my own
ISCU), just fix those darn (original) ECU and ISCU...
On 9/15/07, pdooley <psdooley@verizon.net> wrote:
> Sudhir, I was thinking the same thing.
> The amount of brainwork going into this project is more than just changing
> to MS.
> However, if these talented individuals can design and build their own ISCU
> to interface with the stock ECU, well that would be good for the entire
> Vanagon community.
>
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
> Sudhir Desai
> Sent: Saturday, September 15, 2007 9:32 AM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Re: ECU firmware location
>
> You could always install a Megasquirt, and not have to worry about any
> of this. :D
>
> Sudhir
>
> On 9/15/07, tinker man <tinkerman007@gmail.com> wrote:
> > Hi all,
> >
> > This is kinda getting in-depth into embedded systems design, but does
> > anybody know if the firmware for our ECU's (Digifant or Digijet)
> > resides completely on the 2732 EPROM or is part of it contained also
> > INSIDE the microcontroller itself?
> > The reason I'm asking this is because I suspect I have a fried
> > microcontroller (Intel 8049H) but if it's a custom version with
> > protected firmware inside, replacing it won't solve the problem. My
> > CPU reads:
> > MAF 8049H P A167
> > 078801
> > DSD8905V5 U
> > WBX82HSCH
> > (C) INTEL 1977
> >
> > That WBX82HSCH stuff seems to hint it's a custom version
> > (WBX=WaterBoxer) with protected firmware, with some of the firmware
> > also outside in the external EPROM.
> > Any guru's out there?
> >
> > Cheers,
> > TM
> >
>
| 
