Re: Problem reading original EPROM

[romans@starstream.net (Romans, Mark)]

I have an emp10 and use a 165 ecm.  I originally had a lot of trouble with
the same type of thing
that you are experiencing.  I read the chip as an Intel 27C128.  I was
putting the adapter I made
too deeply into the zif socket.  I had to set it a bit higher when I read
the eprom.  I read it, wiggle it a
bit and verify that buffer matches device.  If you have any cold solders or
any sort of problem with
resistance it will do the same thing.  I don't think you can read one of
these too fast. Unless it's
an aftermarket memcal you should have no problem reading it after you work
out the bugs.
Mark
----- Original Message -----
From: "Marteney, Steven J." <smarteney@xlvision.com>
To: <gmecm@diy-efi.org>
Sent: Monday, May 08, 2000 10:22 AM
Subject: Problem reading original EPROM


> Do these things have a security bit?  I tried to read the original EPROM
for
> my 165 ECM (89 F-body 350 TPI) and the programmer keeps giving different
> checksums every time I check it.  The code is APYU3516.  What should the
> programmer be configured for?  The chip doesn't have a recognizable part
> number (LAE8824).  ECMGuy's page says it is a 27C128.  What am I doing
> wrong?  Any hints?
>
> Thanks in advance,
> Steve Marteney
> --------------------------------------------------------------------------
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