eprom editing basics...

[evotech]

Dear Espen,
Having read your previous posts on this subject( I hope I was paying enough
attention) I think that the electromotive tec-ii works slightly different
than you believe. The 27c64 eprom can only be erased with ultraviolet
light(if it has a quartz window) so the tec-ii must have another
emory( should be an eeprom- this would probably be a 28fxxx or 29fxxx) to
store the calibration data. I believe that the chip only holds the working
code and not the data because I know that this is the chip to be changed
when you want to install a new software version( pafz ---> super blend for
example). If I am wrong and the chip your are talking about holds the data,
then I will be very happy because I will be able to use my emulator to tune
the tec-ii on the fly as you want.
For reading the data from a tec-ii if you have lost the calibration file you
should contact Electromotive.
Regards,
John Andrianakis.

----- Original Message -----
From: espen hilde <mwichstr at online.no>
To: <diy_efi at diy-efi.org>
Sent: 15 Ìáñôßïõ 2001 01:34
Subject: eprom editing basics...


> Hi!
> Thanks programmer!
> Tryed allmost same figures wanting to read the chip,same voltage ,and it
> worked!!!
> My goodnes ,I did it ,I did it!!! Anyone who wants to apploud can do it
> now....:-)
> Think you know how to do somthing and do it in real life is different.
> I have a not fully clear picture of what I am going to do with all the
> zeros and
> strange letters,tryed to look intens at it but it did not help...is it a
> nice editor I
> I can put thise figures into and see some stars or something that would
> make it easier to spot look up tables?Or is it bench testing and try and
> error thats king?put zeroes in there and see what it does...?
> I want to do some fine tuning on my modifyed 2.5efi Mercs ,load the eprom
> content into the emulator and hopefully go out there and adjust fuel to
> mach the modifications .I have lost the calibration on the Maserati
biturbo
> with electromotive after some pc trouble...dont want to start all over
> again just to
> make some changes to the warm up enrichment.I have the chip with the cal
> inside but how can I get it downloaded into the electromotive software ?
> Tought of using the emulator on the electromotive ,but if I had the
> software
> and cal working I could make changes to certain points and then compare it
> to the other chip?
> This way I could find the maps easily, Is it something special with the
> electromotive code? it uses look up tables as usual?
> Is there some tricks to spot them?
> Thanks a lot.Hope I did not tier you with my ramblings...
> Espen
>
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