Search found 67 matches

by sabercatpuck
Fri Jan 29, 2010 12:18 pm
Forum: Engineering and Reverse Engineering
Topic: Looking for Info on OBD2 GM 60*V6's
Replies: 33
Views: 27236

Re: Looking for Info on OBD2 GM 60*V6's

dont tell me, let me guess, the little space hanging on at the end of the line right? One thing BTW, I started mine at the beginning ($0000) instead of the end ($FFFF) because almost every time I saw a seed key pair listed somewhere, 90% or better seemed to have a low number. Now obviously there is ...
by sabercatpuck
Fri Jan 29, 2010 2:41 am
Forum: Chip/Memcal Reading/Writing
Topic: Address lines scrambled on a '99 Saturn
Replies: 4
Views: 3637

Re: Address lines scrambled on a '99 Saturn

There is more good info on PCB etching and etchants available on this site. http://www.instructables.com/id/Stop-using-Ferric-Chloride-etchant!--A-better-etc/ Apparently you can recharge many etchants by just adding oxygen back into the mix, and the waxy shiny paper found in magazines can be used wi...
by sabercatpuck
Wed Jan 27, 2010 12:53 pm
Forum: Chip/Memcal Reading/Writing
Topic: Address lines scrambled on a '99 Saturn
Replies: 4
Views: 3637

Re: Address lines scrambled on a '99 Saturn

Akk, went downstars to do some work and remembered that this needs to be a mirror image because when you transfer it back to the copper it will get reversed. After playing around I think I got it corrected, first I had to flip it, then it decided to make the resolution 75x75 again so I had to hex ed...
by sabercatpuck
Wed Jan 27, 2010 11:09 am
Forum: Chip/Memcal Reading/Writing
Topic: Address lines scrambled on a '99 Saturn
Replies: 4
Views: 3637

Re: Address lines scrambled on a '99 Saturn

I finally designed a pcb to be etched. This will plug into the ziff socket on my willem programmer and go to a plcc32 socket. I left the lines going to points that I could then solder wire from one pin to another as needed since in my case the address lines need to be unscrambled before being read o...
by sabercatpuck
Sun Jan 24, 2010 1:39 am
Forum: Engineering and Reverse Engineering
Topic: '99 Saturn Dissassembly
Replies: 58
Views: 60945

Re: '99 Saturn Dissassembly

and here we have first the mode 27 01 get seed, and the followup 27 02 send key address data 19971 ldaA L0387; 387 = $01 19974 bitA #%00000001 19976 beq L99B1 19978 ldaB L3B01; 3B01 = $1E 1997B bitB #%00000001 1997D bne L999F 1997F ldaB L3B04; 3B04 = $00 19982 incB 19983 beq L999F 19985 tst L0E3D; E...
by sabercatpuck
Sat Jan 23, 2010 3:15 pm
Forum: Engineering and Reverse Engineering
Topic: '99 Saturn Dissassembly
Replies: 58
Views: 60945

Re: '99 Saturn Dissassembly

Since I am making an effort to learn the mode 35 stuff so I can hopefully use it in the future I went ahead and slogged through that section of the memory. At this point I don't seem to be getting something right with the mode 35 request though. I am sending 35 01 00 06 00 50 00 and getting 75 01 51...
by sabercatpuck
Sat Jan 23, 2010 3:06 pm
Forum: Engineering and Reverse Engineering
Topic: Looking for Info on OBD2 GM 60*V6's
Replies: 33
Views: 27236

Re: Looking for Info on OBD2 GM 60*V6's

Might try adding the traps, after a 33 (though I doubt you are getting any of them using a program to run it) just re-try the last number. If it was a 35, incriment and try the next one right away, If it was a 36, incriment and wait 10 seconds, and if it was a 37, wait 10 seconds and try the same nu...
by sabercatpuck
Fri Jan 22, 2010 3:29 am
Forum: Engineering and Reverse Engineering
Topic: Looking for Info on OBD2 GM 60*V6's
Replies: 33
Views: 27236

Re: Looking for Info on OBD2 GM 60*V6's

I am thinking I may remove the seed key thing altogether on mine, if nothing else it would probably open up at least a little space to put something else in :) Although since one of the big wish list items from the Saturn guy's is to be able to put in a manual tranny and still have cruise control. I...
by sabercatpuck
Fri Jan 22, 2010 1:53 am
Forum: Engineering and Reverse Engineering
Topic: '99 Saturn Dissassembly
Replies: 58
Views: 60945

Re: '99 Saturn Dissassembly

Well this took awhile so I am not planning on doing it much (unless I build a program to do it for me) but I merged a section out of the code with data from the logic analyzer so that you can actually step through it and see what is happening, while it is happening. This goes from initial check thro...
by sabercatpuck
Fri Jan 22, 2010 1:46 am
Forum: Engineering and Reverse Engineering
Topic: Looking for Info on OBD2 GM 60*V6's
Replies: 33
Views: 27236

Re: Looking for Info on OBD2 GM 60*V6's

Ahh the waiting game, I love that one, it's fun. even after I set the delay for 11 seconds after getting a 36 response, I would still occationally get 37's, that is why I set a trap to retry them (If it hit a 37 I would subtract 1 from the counter so when it incrimented the counter later it would re...