Re: How to identify eprom

["Dan Plaskett" <dynastydan@worldnet.att.net>]

Grumpy,

Thanks for the info.  I have a few more questions please based upon your
previous response.  You mentioned an adapter to connect the memcal in the
chip burner.  I am not sure that I have all the lingo down yet.  Is the
memcal the entire chip housing.  I see that the one I am looking at has 4
chips on it.  I assume that I am only reprogramming the larger brown chip
with the sticker covering the window?  Does that chip need to be removed
from the main housing?  What would you recommend for a chip burner?  A chip
eraser?  Do I make the adapter you mentioned?  Thanks again.

Dan Plaskett
----- Original Message -----
From: "nacelp" <nacelp@bright.net>
To: <gmecm@diy-efi.org>
Sent: Sunday, February 06, 2000 4:54 PM
Subject: Re: How to identify eprom


>
> > First let me say that I am relatively new to the list.  I recently
pulled
> a
> > 7727 out of an 88 Cutlass complete with wiring harness for my TPI
> conversion
> > of my 61 355ci vette.  I am using a 91 Corvette TPI.  In my educational
> trek
> > through the archives and other various sites I believe I have learned
that
> > most if not all of the 7730 and 7727 ecm applications used a 27C256
eprom.
> > First, is this correct?
>
> For at least your v-8 application all the proms, I've seen are 256.
>
>   Second, is it simply a matter of erasing the chip
> > (I saw some sites referring to special ultraviolet lights for erasure)
and
> > using a burner to reprogram it with something like the software
TunerCat?
>
> Just that easy, got to make an adapter for putting the memcal in the chip
> burner, there are a bunch of answers for that,
>
> > Third, where do you get the original bin file to start with?
>
> One other point is that you need to start with a v-8 memcal.  I'd suggest
> buying a new one from GM to make sure your starting with a "good known"
> item.
> Then have fun.  That will also give ya a .bin.  At the FTP there should be
a
> AUJP, that is for a 91 auto TPI.  Oh also easier to start with the right
> tranny .bin  the IAC function seems to be very different manual to auto.
> Grumpy
>
>
>   Thanks for the
> > assistance.
> >
> > Dan Plaskett
> >
>
> --------------------------------------------------------------------------
> --
> > To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
> > in the body of a message (not the subject) to
majordomo@lists.diy-efi.org
> >
>
> --------------------------------------------------------------------------
--
> To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
> in the body of a message (not the subject) to majordomo@lists.diy-efi.org
>
>

----------------------------------------------------------------------------
To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
in the body of a message (not the subject) to majordomo@lists.diy-efi.org