[Gmecm] EPROM Identification- (from Australian Delco VR 5L Auto)

[Justin Albury]

Ok no problems.... just tell your eprom programer that the EPROM is a 27C512 and
it will work just fine.  As i said b4 all VR Autos V6 or V8 use a 27c512 eprom
in the memcal.  I have lost count of how many I have done over the years, but
they all worked for me.

I hope this helps

Justin



Quoting John Lawson <jg_lawson at optusnet.com.au>:

> Justin,
> I'm not having trouble identifying the chipset, just the chip (EPROM), hence
> 
> my question, "Any idea what type of chip this is, and what parameters I have
> 
> to set to re-burn it?"
> 
> The EPROM's on earlier Delcos I'm used to often have the type on them (eg 
> 27128), but when they don't,  there's at least a manufacturer's name.  All 
> that is inscribed on the anonymous piece of silicon I'm dealing with is in 
> my original question below.
> 
> I'd be grateful of any information that might help me understand how to put
> 
> a new binary on it- ie either the manufacturer and model description, or the
> 
> parameters required by a burner.
> 
> Thanks,
> 
> John
> 
> 
> 
> ----- Original Message ----- 
> From: "Justin Albury" <justin at jacomms.com>
> To: <gmecm at diy-efi.org>
> Sent: Sunday, March 27, 2005 8:41 PM
> Subject: Re: [Gmecm] EPROM Identification- (from Australian Delco VR 5L 
> Auto)
> 
> 
> > The fact that it is a PCM(642) says that its a Auto.  Manuals ran 
> > ECM(082).  All
> > autos had a 27C512 EPROM and all manuals had a 27C256.  All V6's had
> Knock
> > decode boards in the MEMCAL and only HSV type V8's had Knock decode 
> > boards.
> > if you are still unsure on the memcal type ....take a digital pic of the 
> > chipset
> > or the knock board and i will let you know what type it is.
> >
> > Justin
> >
> >
> >
> >
> > Quoting John Lawson <jg_lawson at optusnet.com.au>:
> >
> >> I've just bought a 1617642 PCM out of a VR Commodore V8 Auto (I think), 
> >> with
> >> a memcal that has an EPROM with the following written on it:
> >>
> >> 1616 7633
> >> BLUP 9350 980
> >> SINGAPORE 0263
> >>
> >> This should be a 512 Kbit EPROM if it's what I think it is.  It had a
> >> handwritten "Bullet 5118" or "Bullet 3118" sticker on it, but no Delco 
> >> silver
> >> sticker.
> >>
> >> I've tried to read it as a 27C512, and it just downloads 8787, F7F7 and
> >> FFFF's.
> >>
> >> Any idea what type of chip this is, and what parameters I have to set to
> >> re-burn it?
> >>
> >> Thanks,
> >>
> >> John
> >
> >
> >
> >
> > 
> 
> 
> 
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