[Gmecm] Burning 2732

[Jared Ryan]

I finally figured it out, after putting it all aside and coming back to 
it after a while..

I discovered the Willem forum, on the willem.org Web site, and found some 
threads where people were discussing exactly the same issue, with the 2732 
chip.

It turns out, after I switched the positions of the jumpers at JP5 and 
JP6, the chip burned properly.  Apparently this chip needs much higher 
voltage than most to program.

I have not put the chip in the car yet (will do so tomorrow), but the chip 
verifies perfectly against the .bin file, so I am hopeful that it will 
work well in the ECM.

This is the first EPROM I have ever programmed, so I hope it works.  It is 
an unmodified .bin for a 1989 9C1 Caprice, which should be a close match 
to my engine to start with.

On Thu, 10 Aug 2006, Robin Handley wrote:

> Has your programmer ever successfully programmed an EPROM? If not, it may be
> faulty...
>
> Robin
>
> ----- Original Message -----
> From: "Jared Ryan" <jryan at caminofx.org>
> To: <gmecm at diy-efi.org>
> Sent: 09 August 2006 23:36
> Subject: [Gmecm] Burning 2732
>
>
>> I need a pointer.  I must be doing something wrong.
>>
>> I am trying to burn an ANLU .bin in a 2732 chip for a 1228746.  I have
>> a Willem programmer, and a blank 2732 and a blank 27C32.  The Willem
>> programmer is able to read 2732 chips without problems.  To test it, I
>> read an ANTT chip (F-body 305 TBI), and it read without problems, and
>> the data in the resulting .bin file made perfect sense in TunerCat.
>>
>> So I start with a 2732 chip that I know is blank, put it in the ZIF
>> socket in the programmer, select 2732 in the software, and set the DIP
>> switches as the program shows.  I click "Burn," and it says it is
>> burning, but when it gets to the "Verify" step, it shows an error at
>> the very first address.  I read the chip, and nothing has changed.
>> Every bit is still a 1, so it is still blank.
>>
>> The programmer interfaces with the PC with a parallel cable and I have
>> the USB cable hooked up to provide 5V power.
>>
>> What am I missing?  I get the same results whether I try the 2732 or
>> 27C32.  The markings on the two chips are as follows:
>>
>> AM2732
>> ADC
>> 8318DP
>> C1983 AMD
>>
>> B8652
>> NMC27C32Q
>> -45
>>
>> Any advice would be most appreciated.
>>
>>   ---> Jared Ryan <---
>> jryan at caminofx.org | http://www.caminofx.org
>>
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>
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