polygaryd

i have the pp2 and the amtel 28c256 eeprom chips. i am using winbin with the 730 definition file. i have copied my stock bin to the hard drive and gone through it with winbin changining nothing, i then go to burn the new eeprom with no modifications even and the car doesn't read fromt he chip at all. i can take the chip out of the ziff socket and the car still runs the same(very badly) i put the stock chip in the ziff socket and the car runs great. i have checked the continutity of the ziff socket into the memcal and it is great. my test with the stock ship proves this. sowhat is the problem.. i can't even burn a copy of the stock chip into the eeprom and read allt he directions. someone help me please.

1bad91Z

iTrader: (1)

You need 29C256's for EEPROM chips for a 730 or you can you a 27C256 EPROM chip (UV erasable). I've never heard of anyone using (28C256's). That may be your problem.

SATURN5

First...

What size bin are you loading into the EEprom?

If the bin is 16K and you are loading into the lower half of the EEprom, then, you will have a problem.

Either double the bin using the copy command in dos or load into the upper half of the EEprom starting @$4000.

If the bin is 32K we will work from there.

AM91Camaro_RS

i had the same problem. i am using the 29c256 eproms and cannot get the car to run off of the burned chip.let me know if you have a copy of the stock chip so i can try it again from the downlaoded copy.

Grumpy

Some eeproms need an intial starting point.
Generate a full lenght prom of FFs, and program the chip with that. Then try programming it the regular way.

Also everyonce in a while if one pukes, a reburn of all FFs might cure it.

Grim Reaper

Agreed. Also, are you able to make them "Verify"?

polygaryd

hi everyone thanx for the info. i will try a 29 series chip to burn. for all the other info, i am trying to burn a 32K bin into the eeprom also it verifys and on top of that i tried to burn a eeprom with ff in all locations verify the eeprom and then burn the bin file. and it still didn't work. also as to the using 28c256 chips it says right in the article for switching maf to map ecms it gives the direct replacements for the stock e and eeproms to use for this project. so any other help is apreciated.

polygaryd

hey everyone i was just wondering where i can get a 29c256 and on top of that i wanted to know if anyone has had success with the 28c256 chips and if so did you program the id inot the chip and how about the protect button. also when you edit the bin in winbin do you update the checksum?? once again i am very new to this and i just want my damn car to run correctly with this new sd conversion i did.