P12 and E40 Support?

They go by many names, P01, P59, VPW, '0411 etc. Also covering E38 and newer here.
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Tazzi
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Re: P12 and E40 Support?

Post by Tazzi »

I thought the E40 used CANbus??
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Re: P12 and E40 Support?

Post by Eagle5 »

This is a p12 from a 4.2l trailblazer. CAN bus isn't in the wiring diagram. I beleive the hardware supports CAN bus, but only the cobalt use it. I am communicating via j1850.
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Re: P12 and E40 Support?

Post by Eagle5 »

I don't think the memory search is going to bear fruit.

Does this output make sense?
STPX H:6C10F0, R:1, D:2701
67014B25

>STPX H:6C10F0, R:1, D:2702F344
670234

>STPX H:6C10F0, R:1, D:2701
67010000

>STPX H:6C10F0, R:1, D:340010001BBE1E
7F340010001BBE12

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Re: P12 and E40 Support?

Post by antus »

Use an older copy of windows in a virtual machine, eg windows xp.
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Re: P12 and E40 Support?

Post by Eagle5 »

The main chip is P/N 263 09394824 K62K. The memory controller is AM29BL802CB-65RZE.
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Re: P12 and E40 Support?

Post by kur4o »

Eagle5 wrote:The main chip is P/N 263 09394824 K62K. The memory controller is AM29BL802CB-65RZE.
Do you have a pic of the board?

Code: Select all

>STPX H:6C10F0, R:1, D:340010001BBE1E
7F340010001BBE12
Try loading at ff6250 memory range.
$1BBE1E address is part of the flash chip, so you can`t write there.
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Re: P12 and E40 Support?

Post by Eagle5 »

Didn't work ...
b'STPX H:6C10F0, R:1, D:2701\r'
b'STPX H:6C10F0, R:1, D:2701\r670116E8\r\r>'
b'STPX H:6C10F0, R:1, D:2702D5AA\r670234\r\r>'
b'STPX H:6C10F0, R:1, D:34001000ff6250\r7F34001000FF6212\r\r>'

Where is the processor RAM in memory vs. the flash chip?
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Re: P12 and E40 Support?

Post by Eagle5 »

Never mind, I see that the chip is mapped to addresses 000000 - $7FFFFF.

What is "00 10 00" within the 0x34 command? Your trying to write to the very last area in ram prior to the registers.

Getting Window XP is proving to be difficult.
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Re: P12 and E40 Support?

Post by kur4o »

I hate to say it but 7f means mode is not supported. If the mode was supported you will likely get 34 xx response. xx meaning the reason for refusing.
Flashing is likely done via canbus. Vpw is used for module integration with older design.

The processor sees ram from ff0000 til ffffff. Not all is available. It depends on pcm and configuration.
Do you have a bin from the pcm.
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Re: P12 and E40 Support?

Post by kur4o »

Eagle5 wrote:
What is "00 10 00" within the 0x34 command? Your trying to write to the very last area in ram prior to the registers.

Getting Window XP is proving to be difficult.
00 is submode

10 00 is the size of the requested upload

ff 62 50 is the address you are trying to upload.

Try oracle virtualbox for xp.
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