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NVSRAM, I'm lost!

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Old 03-04-2008, 09:51 PM
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NVSRAM, I'm lost!

I found the S_AUJP_V4 bin for the nvsram and I've imported all my spark,ve, and all other tables that are currently running in my car. Now the car wont even start vats is turned off, but still nothing happens. This is the bin for the nvsram. I'm lost and need help. I just lack the knowledge to complete the hack I guess . I loaded the modified bin for the nvsram into the chip with PP2, then with the ignition on and car not running I loaded the same bin into the nvsram module. The load was a success but when I tried to start the car it would not start.

What am I doing wrong? All solder connections have been double checked and looked good.
Old 03-04-2008, 10:11 PM
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Car: 86 Monte SS (730,$8D,G3,AP,4K,S_V4)
Engine: 406 Hyd Roller 236/242
Transmission: 700R4 HomeBrew, 2.4K stall
Axle/Gears: 3:73 Posi, 7.5 Soon to break
Re: NVSRAM, I'm lost!

Do you get a SES light or anything?
Did you put the memcal on the right way?
The 27C256 or 512 (burned with offset) installed correctly?
Just throwing out some possiblities.
Try re-downloading your bin from the module and see if it compares exactly to the one you uploaded. Sometimes that can show there was a problem.
Compare that against the S_AUJP one and confirm you only changed things you wanted. When there are allot of items to change, its easy to do one that you shouldn't have.
I'd ask to check your bin but I'm away from home until at least Monday.
As another thought you could try the original file supplied with the board or from the thread about it. If your combo is kind of close, just to get it started.
Old 03-04-2008, 10:58 PM
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Re: NVSRAM, I'm lost!

No SES light.
Yes chip is in correctly.
I'm using 27C256 chips, but I'm not sure what offset you are talking about. If you are refering to the one you modified to be used with the nvsram module then yes. Please tell me if I'm using the wrong offset

I'll run back down stairs and try what you said about downloading from ALDL and compare bins

Thanks for your help
Old 03-04-2008, 11:11 PM
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Re: NVSRAM, I'm lost!

The offset he is talking abot is where the bin starts on the chip. If I understand it correctly instead of the bin starting at the beginning of the chip and having blank space at the end it has blank space at the beginning and the bin is at the end. I can't remember what it should be set at but if your using the latest version of TunerPro I think it set it for you.(I could be wrong)

Hope this helps,
Dewayne
Old 03-04-2008, 11:44 PM
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Re: NVSRAM, I'm lost!

What ever offset that's in the S_Aujp_V4 for nvsram module that's one I'm using. I now I can change were it begins and ends on my PP2. But where?
Old 03-05-2008, 12:16 AM
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Re: NVSRAM, I'm lost!

What is PP2?
Old 03-05-2008, 12:27 AM
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Re: NVSRAM, I'm lost!

Pocket Programmer 2. I've always used it to burn my chips. I don't have the Moates burner. So that could be my problem.
Old 03-05-2008, 12:48 AM
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Re: NVSRAM, I'm lost!

I don't see the PP2 being the problem but I can't help you with it. I use TunerPro with Moates burn1, sorry.
Old 03-05-2008, 04:51 PM
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Car: 86 Monte SS (730,$8D,G3,AP,4K,S_V4)
Engine: 406 Hyd Roller 236/242
Transmission: 700R4 HomeBrew, 2.4K stall
Axle/Gears: 3:73 Posi, 7.5 Soon to break
Re: NVSRAM, I'm lost!

Don't worry about it, you have the 256 chip.
You only need to do an offset if using a larger capacity chip.
The only other thing I can think of is to set the $8D to $AA so updates don't corrupt the checksum. I don't remember off hand if I left it at $8D or not.
Checking...

Edit: I did leave it at $8D so the checksum would be calculated.
Change it to $AA if you are emulating or it could/will cause problems.

If you still have trouble, post up your bin as a zip file and I'll take a look and see if I can spot anything odd.

Last edited by JP86SS; 03-05-2008 at 05:02 PM.
Old 03-05-2008, 06:04 PM
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Re: NVSRAM, I'm lost!

Hey thanks for the help. This is what I'm working with. I'm not all that great with editing so please be patient with me because I don't know where to start when making changes to the checksum.
Attached Files
File Type: zip
nvsram383.zip (15.7 KB, 19 views)
Old 03-05-2008, 07:09 PM
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Car: 86 Monte SS (730,$8D,G3,AP,4K,S_V4)
Engine: 406 Hyd Roller 236/242
Transmission: 700R4 HomeBrew, 2.4K stall
Axle/Gears: 3:73 Posi, 7.5 Soon to break
Re: NVSRAM, I'm lost!

I don't see anything out of place that would cause a no start in the code or calibration except for some IAC values. I noted things as I went through it.
Might give you some ideas but they are just my observations.
You know your combo best when it comes to using the 42# injectors, I don't have experience with the offsets etc with them being that large.
  • Idle Error SA and Retard tables are zero'd out.
    A little in there can help stabilize idle but you may have found otherwise with your combo.
  • Injector PW offset Vs BPW
    You have these a bit higher, might be giving too much fuel.
    Might need that with the 42 lb injectors though. Just saw the increase and noted it.
  • OL AFR % change Vs MAP
    Zero'd out.
    Not sure if this could cause a startup issue with the calculation.
    I don't believe so but noted it.
  • Startup enrichment Vs Temp
    You pulled a bit, might want to go back on that if it starts and doesn't keep running.You made changes to the Invesre lookup table, could try putting it back to see what happens.
  • IAC warm Park position is 0 at 56C,
    Might want a few counts in there for restarting when warm.
  • IAC Idle timeout steps Vs Coolant or Mat Temp,
    Could be causing no start if not opening at all (Pretty much zero'd out).
  • VE lower table looks low in the low RPM/ Low MAP ranges.
    Could just be your combo as running previously.
You do not need to fill the extended table (RBobs) from the previous versions.
The address space is preserved for people to bring thier existing calibration data in but it is not used in V4.
Only the stock table to 5600 OR the Z69 extended tables are used (By selecting as you did)

Check the readings on your MAT and/or IAT sensors, maybe there's an issue there causing a skew to the fuel at cold temps.
Only other thing is if the plugs got fouled on your first attempt and just won't come clean.

To disable checksum (If you get SES)
At location L8008 instead of $8D you would nmake it $AA.

Last edited by JP86SS; 03-05-2008 at 07:15 PM.
Old 03-05-2008, 08:10 PM
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Re: NVSRAM, I'm lost!

Originally Posted by JP86SS
I don't see anything out of place that would cause a no start in the code or calibration except for some IAC values. I noted things as I went through it.
Might give you some ideas but they are just my observations.
You know your combo best when it comes to using the 42# injectors, I don't have experience with the offsets etc with them being that large.
  • Idle Error SA and Retard tables are zero'd out.
    A little in there can help stabilize idle but you may have found otherwise with your combo.
  • Injector PW offset Vs BPW
    You have these a bit higher, might be giving too much fuel.
    Might need that with the 42 lb injectors though. Just saw the increase and noted it.
  • OL AFR % change Vs MAP
    Zero'd out.
    Not sure if this could cause a startup issue with the calculation.
    I don't believe so but noted it.
  • Startup enrichment Vs Temp
    You pulled a bit, might want to go back on that if it starts and doesn't keep running.You made changes to the Invesre lookup table, could try putting it back to see what happens.
  • IAC warm Park position is 0 at 56C,
    Might want a few counts in there for restarting when warm.
  • IAC Idle timeout steps Vs Coolant or Mat Temp,
    Could be causing no start if not opening at all (Pretty much zero'd out).
  • VE lower table looks low in the low RPM/ Low MAP ranges.
    Could just be your combo as running previously.
You do not need to fill the extended table (RBobs) from the previous versions.
The address space is preserved for people to bring thier existing calibration data in but it is not used in V4.
Only the stock table to 5600 OR the Z69 extended tables are used (By selecting as you did)

Check the readings on your MAT and/or IAT sensors, maybe there's an issue there causing a skew to the fuel at cold temps.
Only other thing is if the plugs got fouled on your first attempt and just won't come clean.

To disable checksum (If you get SES)
At location L8008 instead of $8D you would nmake it $AA.

I've never had a no start issue prior to using nvram. running 42's are tricky with 730, but I got them work pretty good. I even got up to 81% DC and 7.8 BPW on couple of runs at the track.

I'm just tying to figure out why I can't get it to work right. Could you talk me through step by step process from start to finish on how to upload bins into the eprom and nvram module. Thanks

Craig
Old 03-06-2008, 02:01 PM
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Car: 86 Monte SS (730,$8D,G3,AP,4K,S_V4)
Engine: 406 Hyd Roller 236/242
Transmission: 700R4 HomeBrew, 2.4K stall
Axle/Gears: 3:73 Posi, 7.5 Soon to break
Re: NVSRAM, I'm lost!

From your previous description you did it right.
Could the wires from the board be connected incorrectly or something there?
Old 03-06-2008, 05:30 PM
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Re: NVSRAM, I'm lost!

I have one quick question for you. Does it matter if I'm using TunerCat and TunerPro at the same time to edit the bin? Meaning, I like the features in both tuners. I bounce back and forth when making changes to the bin. Because it's easier to import tables in TunerCat than it is in TunerPro IMO. Although TunerCat does not support S_AUJP_V4.
Old 03-06-2008, 05:33 PM
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Re: NVSRAM, I'm lost!

Hey JP,

I think there are some gotchas on the S_AUJP_V4 bin for my nvram module. I have disassembled the standard S_AUJP_V4 bin and started working through it, right off the bat I can see a couple of issues with the placement of the extra VE tables. They need to moved to a lower region of the eprom for the scheme to work right, which also means a custom XDF file to go with the bin. Anyway, I will keep plugging away at it... hang in there Craig!

Cheers.
Old 03-06-2008, 05:39 PM
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Re: NVSRAM, I'm lost!

Enrst,

Thanks man! I was going crazy.
Old 03-06-2008, 07:17 PM
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Car: 86 Monte SS (730,$8D,G3,AP,4K,S_V4)
Engine: 406 Hyd Roller 236/242
Transmission: 700R4 HomeBrew, 2.4K stall
Axle/Gears: 3:73 Posi, 7.5 Soon to break
Re: NVSRAM, I'm lost!

Originally Posted by MonteCarSlow
They need to moved to a lower region of the eprom for the scheme to work right,
Way back when, I think you warned me about having too much beyond the stock area too. I did my testing without using the extended VE table.
Arrgg.., Will have to do more than just that table me thinks.
Sorry bout that Craig.
Can you try and start it with the extended tables off?

From what I see here (With limited notes)
The max address of 8BFD for the GUI updates is exceeded by the following items.
They locate starting at $9000
Extended VE table (Rbobs)
Exteneded VE table (Z69')
WB selection words and data tables
Ext PE Vs RPM table
Launch Mode table

EDIT: If I did my hex right, looks like the items will fit in the allocated update space.
Just need to make the changes.
Will take me a couple days to get home and figure the best way to cover all the bases on this. Hopefully I can find what I did wrong on the Launch Mode and fix that too.

From what I'm seeing I think if you restored the "stock" values on all items starting at $1000 in TP the checksum would be satisfied and it should start.

Last edited by JP86SS; 03-06-2008 at 08:42 PM.
Old 03-09-2008, 02:48 PM
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Car: 86 Monte SS (730,$8D,G3,AP,4K,S_V4)
Engine: 406 Hyd Roller 236/242
Transmission: 700R4 HomeBrew, 2.4K stall
Axle/Gears: 3:73 Posi, 7.5 Soon to break
Re: NVSRAM, I'm lost!

Were you able to start it by restoring the values?

Ernst made up a file that may work now but both our cars are unable to test it. Mine is snowbound in the garage with low battery, no ventilation.
Would like to know if restaoring them allowed it to run as I tested it previously.
Old 03-10-2008, 08:59 AM
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Re: NVSRAM, I'm lost!

Ernst sent me a new xdf and bin modified for S_AUJP_V4, but it still did not start. He just sent me a bin to clear the NVSRAM module. It maybe my problem, I will not know until I get home tomorrow. Thanks for asking man, I'll keep you posted. I'm a Drill instructor so my time is limited.
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