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
>