7730 ARDC, AZTY, and other V6's

[rr]

This is great info doug, between your findings and mine, I'm sure that
we can fix up a prom for mike. I checked his (arpl) against the azty
and except for the tables they are the same.

As far as the location $4D, Eng temp looks correct. $68 is possibly
mph. $6D is possibly tps%. (I've been hacking the tcc section).

I haven't checked your egr findings yet, but I will, and get back
to the list.

BobR.


Doug wrote:
>I'm still working on it.  I definitely found the SA table.  That was easy,
>but to actually verify it was hard because I had to make sure what the code
>was doing and then verify that the code was calling that table.   The AZTY
>bin I disassembled and it looked much the same as my ARDC but with minor
>changes.  The code in the AZTY is slightly longer.  But from what I've got
>and from what you all have done with the AZTY we should about have it all.
>By the way the 727 hack on the ECMGUY page was very helpful.  The ARDC was
>arranged differently, but it was byte for byte in places which made it
>easy.  Some sections were obvious.  This lead me to what addresses where
>what variables in my chip.  Also I looked at the I/O addresses and assumed
>they would be the same and found those in my chip and look at what
>addresses they were stored to.  It seems the more I get dissassembled the
>easier it becomes like a puzzle.   I did find the min. temp for the EGR.  I
>will set this to $FF.  That is the best way to disable it, because it
>causes the calculations to work correctly.  Right now I just blocked the
>EGR tube  and the computer was happy (no light).  The address in mine was
>$8E8B = 66c = 154F,  if I am right.....  I am surprised that not many
>people realize what a performance and gas milage killer the EGR is.  There
>is no benefit of it that I can tell.
>     OK I just looked at the AZTY.  Look at address $4494 and following
>(which is actually $C494).  It looks like the coolant is address $4D (in
>mine its $4B) and that is compared to $8EEF.  That should be the min EGR
>temp.  Also AZTY is the same on the EGR bit which is $2B,#10.  I think that
>is the EGR on/off.  Look at this and see if I am right.  All or some of
>this could be wrong.  hehehe...............Anyway all of my notes are hand
>written on the printout.  maybe I could copy them later on and then scan or
>mail them to you all somehow....if I can be of help let me
>know................doug