In case anyone is interested - might it be worth having a look at this:
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=290361916783
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http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=290361916783
?
3P's TCCS Disassembly/Analysis
- Thread starter 3p141592654
- Start date
Mode 2 is used when running with external ROM. From the factory they run mode 7 to use internal ROM.
You're interrupt table looks a little weird to me. Using your nomenclature, I would not expect IRQs 01-06 to point to the same address. What is this code from?
You're interrupt table looks a little weird to me. Using your nomenclature, I would not expect IRQs 01-06 to point to the same address. What is this code from?
3p141592654;1447833 said:
It's from an older Mazda with the same processor. This specific ECU houses two HC11 G5's and this D8x with an external 256k eprom.
I'll need to finish mapping the pins but I can say for sure that this is being used in a mode which hasn't been covered to large degree. The memory addresses / locations are way off (when comparing to the current documentation).
I'll finish mapping the pins from the D8x and share my findings.
Code:
D8X HC11G5
01: ASR PG7
02: ASR0 XIRQ
03: ~NMI
04: IRP GND
05: IRL MODA/LIR
06: Xin MODA/LIR
07: Xout
08: CCLK
09: ADR
10: IS/~RD
11: OS/~WR
12: I/~E
13: CLK VSSL
14: Sin3 PB1/A9
15: Sin2 PB2/A10
16: Sin1 PB3/A11
17: Sin0 PB4/A12
18: Sout1 PB5/A13
19: Sout0 PB6/A14
20: PB7/A7 PB7/A15
21: PB6/A6 PC7/D7
22: PB5/A5 PC6/D6
23: PB4/A4 PC5/D5
24: PB3/A3 PC4/D4
25: PB2/A2 PC3/D3
26: PB1/A1 PC2/D2
27: PB0/A0 PC1/D1
28: PA7/A15 PC0/D0
29: PA6/A14 R/W
30: PA5/A13 E
31: PA4/A12 Vrh
32: GND
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A short update. Despite the lack of posting activity, we have been working hard on the next step of this project.
Attached is an image of the next gen board. This will support USB diagnostics, up to four ROM images stored in flash memory that can be switched in as desired, and also real time map tuning with the code stored in RAM.
The board is about to go to the board shop, then in a few weeks we get is back and can try it out. Hopefully not too full of bugs. Also need to start work on the software to interface to the board. Lots to do, but things are moving ahead.
I've also started work on understanding the 7M-GTE ECU code. We have alot of the I/O traced out, but need to dig into the code.
Attached is an image of the next gen board. This will support USB diagnostics, up to four ROM images stored in flash memory that can be switched in as desired, and also real time map tuning with the code stored in RAM.
The board is about to go to the board shop, then in a few weeks we get is back and can try it out. Hopefully not too full of bugs. Also need to start work on the software to interface to the board. Lots to do, but things are moving ahead.
I've also started work on understanding the 7M-GTE ECU code. We have alot of the I/O traced out, but need to dig into the code.
Thanks for the support, but the only thing I'm short of is time these days.
The new boards are due to arrive this Wednesday, so we will get to work on building up some prototypes and see how it works!
The new boards are due to arrive this Wednesday, so we will get to work on building up some prototypes and see how it works!
Boards came in today. Parts should be along in a few more days. Not sure how long its going to take to get this altogether, but hoping it goes smoothly.
Nope, nothing for sale right now. We are debugging the hardware and getting the basic software in place. The GUI is being written for now by Jon Sole using Qt. It will most likely be open source with a GPL license, in which case the community can participate.
By the way, we have looked at the M/T and A/T versions of the GTE ecu and they use different code. That means no simple switch using resistors like the GE ecu. At this time I have not figured out what the resistors control with these ecus.
By the way, we have looked at the M/T and A/T versions of the GTE ecu and they use different code. That means no simple switch using resistors like the GE ecu. At this time I have not figured out what the resistors control with these ecus.
Ok folks,
just did a massive cleaned up of this thread......
I know everyone is excited about this as it is a very big endevour, but please keep the me 2's or the I buy post out of it. When 3p and crew are ready, they will make a For Sale post or a post accordingly.
Also please keep the good job, kudos out of it for now also (everyone knows they are doing a damn good job ). Let the disassemblers/coders do thier magic. The group is busy and they work on their own time lines.... do not get offended if your post was deleted, if I didn't see code or part information. It probably got the axe.
Thanks for understanding.
-Figgie
just did a massive cleaned up of this thread......
I know everyone is excited about this as it is a very big endevour, but please keep the me 2's or the I buy post out of it. When 3p and crew are ready, they will make a For Sale post or a post accordingly.
Also please keep the good job, kudos out of it for now also (everyone knows they are doing a damn good job
). Let the disassemblers/coders do thier magic. The group is busy and they work on their own time lines.... do not get offended if your post was deleted, if I didn't see code or part information. It probably got the axe.Thanks for understanding.
-Figgie
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Hi,
Just pulled out my 1GGTE chip and was able to read the code, the code starts out the same as the 7M I will post up the files when I have cleaned it up.
You said the 7MGTE A/T & M/T CPU code is different is the numbering printed on the chip the same?
With the 1G A/T & M/T ECU the CPU Chip has the same numbers printed on them which leads me to think they are the same code (I will confirm this soon.) The 1G A/T has extra chips to control the automatic transmission, this maybe getting done inside the CPU on the 7M unit hence the different code for this reason but the main engine tuning is the same?
I hoping this board above will replace the CPU only so with some mods I can fit this to the 1G ECU
Also will you need a special lid to conceal the new daughterboard?
This is an example of the lid to fit daughterboard
this is how the PCB is mounted
Just pulled out my 1GGTE chip and was able to read the code, the code starts out the same as the 7M I will post up the files when I have cleaned it up.
You said the 7MGTE A/T & M/T CPU code is different is the numbering printed on the chip the same?
With the 1G A/T & M/T ECU the CPU Chip has the same numbers printed on them which leads me to think they are the same code (I will confirm this soon.) The 1G A/T has extra chips to control the automatic transmission, this maybe getting done inside the CPU on the 7M unit hence the different code for this reason but the main engine tuning is the same?
I hoping this board above will replace the CPU only so with some mods I can fit this to the 1G ECU
Also will you need a special lid to conceal the new daughterboard?
This is an example of the lid to fit daughterboard
this is how the PCB is mounted
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