Re: 1226870/1227165 conversion

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

I have had problems when trying to substitute 256k chips for 128k chips.  I
have had to write the data 2x to both the lower and upper parts of the chip
in order for the car to run.
Mark
----- Original Message -----
From: "Bruce Plecan" <nacelp@bright.net>
To: <gmecm@diy-efi.org>
Sent: Friday, June 16, 2000 3:17 PM
Subject: Re: 1226870/1227165 conversion


> Send me a bin of what your woking with, no promises, just Doc is outta
stuff
> to think about with since Gar left
> Grumpy
>
>
>
> > Thanks Bruce.  I think I might have a problem with the chip itself also.
> > Well, not really a problem but that it is a 256K chip instead of a 128K
> > chip.  Seems there is talk of GM using 256K chips instead of 128K and
> > loading the program twice to fill it up or something like that.  Any
input
> > on this thought?  I did read the prom and compare it again and
everything
> > checked out ok. -Jeff
> >
> > ----- Original Message -----
> > From: Bruce Plecan <nacelp@bright.net>
> > To: <gmecm@diy-efi.org>
> > Sent: Friday, June 16, 2000 2:55 PM
> > Subject: Re: 1226870/1227165 conversion
> >
> >
> > > Try reading you finished memcal. the compare that to the file you
> copied.
> > > Maybe the burner got a bad read on things.
> > >   The fast flashing SES is a serious problem.
> > > If there is no error, try erasing the eprom again, and try to copy it
> > again.
> > > Grumpy
> > >
> >
> >
>
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