Quick question

[Dave Zug]

A correction to my earlier post... its pin A15, not A14.

512s work in '730's definetly.

think about it, even if address lines are swapped, the lookup will see
exactly what was burned if both the burner AND the reader (ecm) are using
the same A lines.

now if address lines and data lines are intermixed - thats trouble.

If you burn on a non-standard (address lines swapped) chip using another
chips' addressing profile, its harder for amateurs to read it off correctly.

I think I'm being clear. *I* know what I mean ;-)

----- Original Message -----
From: Marteney, Steven J. <smarteney at xlvision.com>
To: <gmecm at diy-efi.org>
Sent: Tuesday, October 24, 2000 10:52 AM
Subject: RE: Quick question


> Would recommend you also look closely at the pinouts.  The 2732 to 27128
> look the same, but getting around 27256 and especially 27512 pinouts start
> looking different.  I've got a spec sheet somewhere (or on the web) and
I'll
> look to refresh my memory.  Be careful before just plugging and chugging.
> (Doing the same thing, pulled 512 off a 386 board I found in my closet.)
>
> Steve
>
> -----Original Message-----
> From: Dave Zug [mailto:dzug at delanet.com]
> Sent: Tuesday, October 24, 2000 1:20 PM
> To: gmecm at diy-efi.org
> Subject: Re: Quick question
>
>
> well if you plug a bios chip in a 730, it'll reboot your car  ;-)
>
> okay, enough of that. YES you can, but you should concatonate your binary
> file with another copy of itself before burning the 512. this will put the
> file in the high and low halves of the chip, where you can be sure the
> computer can see it wherever it points (it points to only ONE, the low
side
> I beleive, but doing both sides covers you.)
>
> There are fancy things you can do with a 512 like wire a jumper thru a
> switch to the A14 (i think) leg and actually burn 2 seperate images onto
the
> 512 and switch between them (like a NOS image and a NORMAL one). a few
> aftermarket vendors sell up ro 16 images on one chip for smaller chips
line
> in the Grand National.
>
> more than you wanted to know, as always.
>
>
> ----- Original Message -----
> From: NRG <euro at lvcm.com>
> To: <gmecm at diy-efi.org>
> Sent: Monday, October 23, 2000 8:08 PM
> Subject: Quick question
>
>
> > Hey guys. I got a quick question...   I found a 27C512 EPROM on one of
my
> > old 486 motheboards... hehe. I was wonder...  could I use this in my 730
> ECM
> > which requires a 256 ?  Thanx :)
> >
>
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