RE: how do I read this chip?

[Carl Summers <InTech@writeme.com>]

Any way you can take a pic of your adaptor so we could see it....I'll get a
battery for my POS camera tomorrow and post somewhere so all can see my easy
to build adaptor....thought about making up a bunch of them for the newbies
so ya won't have to desolder/solder a memcal....If you used the hypertech
adaptor backwards with long male pins in both ends, you are off one pair of
terminals(look at it closer if this is what you did) or possibly  reading
chip "backwards"...hth's
-Carl Summers



-----Original Message-----
From: owner-gmecm@diy-efi.org [mailto:owner-gmecm@diy-efi.org]On Behalf
Of KasaRyan@aol.com
Sent: Friday, August 25, 2000 9:13 PM
To: gmecm@diy-efi.org
Subject: how do I read this chip?


Ok - now I have my pb10 up and running, and I have successfully read,
modified, and burned my own chip on a 27c512.  Used in the hypertech
piggyback adapter, it seems to work.  The problem is, I cannot read the
stock
gm chip.  The engine ran just fine with this chip in it.  So I think it is
good.

I have created a pin for pin adapter from a board, double row dip header,
and
wire wrap 28 pin socket.  Every time I try to read the chip I get a
different
checksum.  If I bring the collected file into tunercat, it may show garbage
in the numbers, or something is really funky looking.  CSUM may or may not
be
able to do a checksum.  I have tried setting the pb10 to
27512,27c512,28f512,
etc.  It seems to come up the least screwy (semi-repeatable checksums) when
set to 28F512.  The actual chip itself (for my 93 8625 ECM) has a DA in
block
letters at the top,

DELCO
4895
3028

on the sticker

and

014
67633
B9252

at the bottom.

What should my settings be, am I doing something wrong?  Is construction of
the adapter critical, please let me know.  Al, Jim, Carl, Bruce . . .anybody
. . .  - any clues would be great.

Thanks for listening to my electroyappin!
Ryan Hampl - a K-State Grad!    kasaryan@aol.com
139 Hoover Ct.                  Controls Engineer (tubes rule!)
Salina, KS  67401               97 B12 / 86 V65 / 93chevy truck EFI 383
phone  (785) 825 5831           I'M ALWAYS FIRST TO THE GROCERY STORE!
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