Re: Troublesome Eprom

[Shannen Durphey <shannen@grolen.com>]

I read it, then verified the read against the chip.  After getting
way off track, I found the saved .BIN was bad by trying to verify the
checksum.  By then, I'd erased the chip, so the original calibration
was lost.  I guess I'll have to use trial and error to find out what
it is now.  I guess in the worst case it becomes a candidate for a ZIF
socket.
Shannen

Programmer wrote:
> 
> Were you able to read it ?? Read it, check it with a checksum
> program and check the file length. It could be a 128K or 256K chip.
> 
> -----Original Message-----
> From: Shannen Durphey <shannen@grolen.com>
> To: gmecm@diy-efi.org <gmecm@diy-efi.org>
> Date: February 26, 2000 8:14 PM
> Subject: Troublesome Eprom
> 
> >I've got a Delco marked and numbered Eprom here.  It came from a '165,
> >so I'd expect it to be a 16K chip, but I can't seem to program it.
> >The numbers are as follows:
> >DELCO
> >40581
> >E 5012A
> >L6020078S
> >
> >Has anyone else run into a similarly numberd chip?  Were you able to
> >reprogam it?  Any other helpful clues?
> >
> >Thanks,
> >Shannen
> >---------------------------------------------------------------------------

> >
> >
>