So for the past few weeks iv been trying to burn a (AT29C256) chip using the PP2 as my burner, iv read and read many ways of doing it im about to give up i have a 01228063 ECM, auto with 2.73 rear gears, iv used moates website for the offsets, i want to burn the 32k bit chip as a 4kb one right? i stacked the file making it a 4kb file, everything seems to be working right in till i set the chip in the G2 board that's soldered to the ECM, this is vary frustrating for me as iv been trying to burn a working bin for the last few weeks, iv done all the stuff to burn it right, iv checked my soldering, wiring, chips, ECM, im pretty sure its how im burring the chips its very confusing to me, any help would be greatly appreciated

 

Ditch the whole offset thing. It confuses a lot of people. I just tried loading a 16K bin into a 128K chip (AT29C010) use a bin stacker. It came out all messed out because I didn't understand how the person that wrote the bin stack program interpreted the offsets. I still need to look into that later on.......but anyway do this and it will rule out the chip being the problem.

If you bin is 4k and the chip is 32K then you can copy the 4k eight times to make it 32k (4*8=32)

Go to the windows "start", then accessories, then command prompt. Go to the directory where the bin is using the "cd" command. Then type "copy /b mybin4k.bin+mybin4k.bin+mybin4k.bin+mybin4k.bin+mybin4k.bin+mybin4k.bin+mybin4k.bin+mybin4k.bin mybin32k.bin"

That will copy the file "mybin4k.bin" eight times and make a bin called "mybin32k.bin" that is 32k. Do a "dir" to see that the file was created. Program the mybin32k.bin into the chip using the PP2.

 

Set the offset in the programmer to 0x7000. That should put it in the right spot.

 

Not if you mean 4kb = 4 kilobits. You want to burn the 32kb chip as a 32 kb chip with the 4kb code starting at offset 0x7000, and extending to 0x7FFF (ie filling the top end of the 32kbits).

When you said you "stacked the file making it a 4kb file" if you mean a 4kB file (ie 4 k Bytes or 32 kbits). That's correct. To check whether you've burnt it correctly, try reading it back and checking that the code is in the right spot (ie Mask ID at 0x7008).

John

 

The good thing about using the copy /b command is that it always works no matter how the ECM adapter board has the address lines tied off. I do not know how the G2 board ties the address lines.
Both bin stacking or address offsetting will work fine. Address offsetting requires knowledge of how the socket was wired.

 

The exact same thing happened to me today on a 8746 $61 camaro. I know the offsets are right. The car is running, but i dont want to drive it.

But the SES light is flashing fast but the bulb is real dim as its flashing. Any ideas? I burnt the stock BIN that came out of the car.

 

Do you have it in ALDL diag. mode where it is indicating rich/lean status on the SES light?

 

Thats a thought


Does anyone know the flag or bit to set that for?

 

I found this in the 8746 HAC. Im not real sure what i need to do but i cant interpret this in Tunerpro RT. I see all the flags but i cant make them out as to what they are and what they do.

L0002 EQU $02 ; status word

; b7 = *in idle (non-aldl mode)
; b6 =
; b5 = gt 2 vdc & lt 3 vdc (10K Ohm), aldl mode
; b4 = lt 800mv (shorted), field service mode
; b3 = lt 2 vdc (3.9K Ohm), backup mode
; b2 = ?????(used in drp logic)
; b1 =
; b0 = ?????(used in vss logic)

; Normal mode (R>=20K ohm)
; ALDL mode (R==10K ohm)
; Backup mode (R==3.9 K ohm)
; Field Service (R<=500 ohm)

Im assuming i need Bit 7 of a ceratain byte checked?


Thanks