1982 ECM Rom type????????

[Bruce Plecan]

-----Original Message-----
From: Jake Sternberg <chickens at ccwf.cc.utexas.edu>
To: diy_efi at esl.eng.ohio-state.edu <diy_efi at esl.eng.ohio-state.edu>
Date: Sunday, November 08, 1998 11:21 PM
Subject: 1982 ECM Rom type????????

Some of the early stuff was not erasable, this was just rumor, I haven't
played with anything older than the 747....

Bruce
>
>Hi all, i'm very confused:
>
>I have everything from a 1982 camaro with crossfire injection.
>
>the ECM has a chip in it which is 24 pins, shaped just like a
>2732 EPROM.  That's what i thought it was.  I have the original
>chip and a Hypertech chip for this application.  Both have been
>used in this setup before it was removed from the camaro.
>
>Neither of these chips will give me anything in my ROM burner.
>I have a MCT rom burner only about a few years old, and it's set
>to 2732 ROMs.  I tried 2716 and 2764 but got the same result:
>all FFs as though there were no chip plugged in.  I put in some
>known good 2732s in there and they read properly over and over
>again.
>
>There must be something fundamental that i'm missing.  The hypertech
>chip says 82S181 on it under the label, but i couldn't see what else
>it says under there.  What am i missing?
>
>This ECM uses an external ESC/knock box and has the circuitboard-edge
>style connections. It's from 1982.  What are these chips?
>
>Thanks all,
>-jake
>