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  1. Thread: 1997 F-Body ECM

    by kur4o
    Replies
    148
    Views
    12,733

    I think that STY clear memory from 1400-15ff. It...

    I think that STY clear memory from 1400-15ff. It looks like it copies the value from 1400 and stores it[ $100 cycles word ] from 1400-15ff. 1400 looks like one of the injectors bpw so at reset should...
  2. Thread: 1997 F-Body ECM

    by kur4o
    Replies
    148
    Views
    12,733

    This is from a 96 lt4 calibration. It might...

    This is from a 96 lt4 calibration. It might differ slightly in your case. The other config data is also very interesting but nobody knows what it does.
    On 96 code there are more config parameters...
  3. Thread: 1997 F-Body ECM

    by kur4o
    Replies
    148
    Views
    12,733

    That is some serious progress here. I think the...

    That is some serious progress here. I think the next step should be to try to read the full memory range of TPU from $0-$2000. That way we can rip the config file from 94-95 pcm and compare the...
  4. Thread: 1997 F-Body ECM

    by kur4o
    Replies
    148
    Views
    12,733

    I have the numbers from different boards that...

    I have the numbers from different boards that looks similar or analog to the ones you have.

    Sip2 and SIp3 can be one of these
    014
    m33al
    41398
    or
    Motorola
    16180566
    QPD32B
  5. Thread: 1997 F-Body ECM

    by kur4o
    Replies
    148
    Views
    12,733

    94-95 has the very same chip. Visual comparison...

    94-95 has the very same chip. Visual comparison shows some similarities with the injector driver chip but smaller. Both are marked NCR. SO it could be some driver chip??Ignition coil driver??.

    I...
  6. Thread: 1997 F-Body ECM

    by kur4o
    Replies
    148
    Views
    12,733

    I still think that the TPU has 2k of ram....

    I still think that the TPU has 2k of ram. 1400-17FF is shared with eside all the time. Eside can access tpu ram from 1800-2000 by setting some byte on the tpu. The switch byte is 16f0 and is set with...
  7. Thread: 1997 F-Body ECM

    by kur4o
    Replies
    148
    Views
    12,733

    That will be awesome if you can figure it out how...

    That will be awesome if you can figure it out how to use it.
    It is only been speculated how to implement the headers but never done. I traced most of the pins to the memory chip, but there might be...
  8. Thread: 1997 F-Body ECM

    by kur4o
    Replies
    148
    Views
    12,733

    I have another theory. The chip has built in rom...

    I have another theory. The chip has built in rom with $800 bytes and some bootloader. At reset the $800 bytes are copied to ram and the loop is executed from there. Later eside can take control and...
  9. Replies
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    93,568

    Nice you should try to make a coil cake special...

    Nice you should try to make a coil cake special for tuning maniacs. I would love to taste it.




    It might be because the dwell limiter circuit didn`t get kicked in by a specified threshold of...
  10. Thread: 1997 F-Body ECM

    by kur4o
    Replies
    148
    Views
    12,733

    Great find, that $800 bytes part is missing on...

    Great find, that $800 bytes part is missing on 94-95 code. It must be the instruction set or code for the tpu. Italso is placed on a non shared memory region with eside. I guess on 94-95 version it...
  11. Replies
    553
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    93,568

    Here is the temp conversion. The signal is also...

    Here is the temp conversion. The signal is also inverted so rawAD $00 equals $FF scaled
    The scaled output is converted to temp as follow.
    $00=-40
    $10=-28
    $20=-16
    $30=-4
    $40=8
    $50=20
    $60=32...
  12. Replies
    33
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    755

    They are different type of chips. The 27sf512 is...

    They are different type of chips. The 27sf512 is eprom erasable type and the n28f512 is flash type. It is likely to use different commands set for the flashing process. So it must be a software...
  13. Replies
    553
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    93,568

    Kickdowns are violent as hell, especially on 2-1...

    Kickdowns are violent as hell, especially on 2-1 downshift. I think WOT upshifts are much more harder on the trans, newer PCM reduce engine power on that conditions.

    Using the stock coolant sensor...
  14. Replies
    33
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    755

    Don`t bother with burn2. They noted that other...

    Don`t bother with burn2. They noted that other chips are not supported. It could be a software thing or a lack of 12v source needed for erasing and writing.

    Get an old PC with parallel port and xp...
  15. Replies
    553
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    93,568

    I got the mail and stuff looks really good. Nice...

    I got the mail and stuff looks really good. Nice work done with the board design. One downside might be that capacitor is not between controller and resistor{AS per PCM design}, but is between...
  16. Replies
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    201

    Most of the PCM side is already done, I still...

    Most of the PCM side is already done, I still haven`t look at the 96-97LT1 PCMs. When we get there you will be of great help of what you have. Even that the VPW PCMs looks similar they have some...
  17. Replies
    6
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    201

    Thanks to everyone for the support. I will send a...

    Thanks to everyone for the support. I will send a pm with the shipping details.

    The tool is supposed to be a eehack equivalent for those PCMs. It is still on the planning stage but can evolve to...
  18. Replies
    553
    Views
    93,568

    I am about to get the SPFcop system tomorrow and...

    I am about to get the SPFcop system tomorrow and start playing with the code. I doubt I will go anywhere but will give it a try.

    You`d better start adding code for temperature compensation since...
  19. Replies
    11
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    371

    Some truck bins have even lower SA and the PE...

    Some truck bins have even lower SA and the PE mode is disabled. They run 14.7 at full throttle and 5-10 * advance based on load. I don`t know if it is for emissions or cleaner combustion but you can...
  20. Replies
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    1,290

    Can you post the dump. Thanks

    Can you post the dump.

    Thanks
  21. Replies
    6
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    201

    Wanted AVT cable and PCMs

    An AVT cable and PCMs are wanted for a new tool development.

    AVT-852 USB cable is preferred.

    The PCMs needed are
    ls1 PCM 512kb and 1mb.
    lt1 PCM 96-97
    blackbox PCM 98-00
    V6s 60* PCM 99-05...
  22. Thread: 1997 F-Body ECM

    by kur4o
    Replies
    148
    Views
    12,733

    D84G appears in another diesel PCM which also use...

    D84G appears in another diesel PCM which also use optical sensor similar to the optispark. I am suspecting the chip is some kind of special motorola production made specifically to work with the opti...
  23. Replies
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    9,406

    Bentwings, It is nice that in the end it is...

    Bentwings,

    It is nice that in the end it is all good. It was a good diagnostics workshop for all of us.

    I remember that you mentioned the PCM was changed at some point.

    Steveo the creator...
  24. Replies
    553
    Views
    93,568

    I made some progress on ls1 disassembly. There...

    I made some progress on ls1 disassembly.

    There are 3 dwell values calculated but it is not clear where they are used. It must be again some TPU usage.

    The first value is the BASE dwell. It is...
  25. Sticky: LRT Can you share an unlocked version of...

    LRT

    Can you share an unlocked version of 12587603 1mb xdf.


    I am doing a disassembly of that OS and it may help me to label known stuff faster.
    It will really speed up the process.

    Thanks
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