I have the pocket programmer 2 and reprogramming the chip right now. The stock chip is a 27C128 for the 165 ecm. I can't find on the program where to select the last 16 kb of the 32kb on the 29C256 chip?

 

you are trying to place a 16k bin on a 32k chip. This means you need to put the bin in the upper 16k of the 29C256. The offset, therefore, is 16384 bytes, or $4000 hex. In the PP2 software, there is a place to enter the starting address on the chip.

Alternately, you could use the bin stacker in TunerPro (I see you're using this software from your other post - want to be clear that this isn't an unsolicited plug) to stack your bin into the chip. Select "32k" as the chip size, "32k" as the block size, and "16k" as the bin size. The burn the outputted 32k bin onto your 29C256.

Hope this helps.

M

 

Thanks for the help. I put the information into TunerPro on the bin stacker. But then do I "append" or "save layout as" or "load Layout"? Those are the buttons on the right upper part of that screen. If I hit "append" then it says "There is an error opening bins at position 0. Bad positions are filled with zeros." It doesn't make any sense to me.

The other problem I'm having is that everytime I open the program (TunerPro) some of the information is different. Now that has me stumped because I havn't changed any information on the bin yet. All I've done is copy the bin in there right now and view. The chip in there right now is the 27C128.

 

enter the settings i state above. then click the "browse" cell in the table that results (with only one row). browse to your source bin. then select the output bin in the "output" field. then click append.

when all else fails, read the manual. hit F12. :-D

read, read, read, read... all the information is here!

 

I'm wondering if something is wrong here because I have been trying to pull up the bin I copied from the eprom in that browse section and it says the bin size has to match what is specified. Maybe this chip isn't a 16kb. I know it should be.

 

maybe you read the chip incorrectly. right click on the actual bin file, go to properties, and read the size of the chip. should be 16.0k (16384 bytes).

 

Well, this definetly appears to be my problem. I have no idea what eprom this thing has. Depending on what type of device I choose on the programmer, the bin size varies from 32, 64 and even had it 128 once. If I just set the device as the standard 27C128, the bin actually is a 32kb bin size. So I'm pretty confident this is my problem. I copied the stock (arap) bing settings onto the 29C256 with no problems. Now if I just do a straight copy of the "mystery eprom" to the 29C256 then that works fine also. The car will run as if nothing changed, but if I go to change something on the 29c256 in TunerPro...wow, it does not like that. And going through the program it does not look as though some things are right. Speed limiter set to 0 mph, fans on at -41, things like that. But like I said a straight copy of the mystery eprom works. I just don't think TunerPro is reading the bin correctly. So my question is, where should I go from here?

 

welp, 6e, 32, 32b are all 16k bins. sounds like you're reading the chip as a 32k chip, which is fine, but then the bin is sitting in the upper 16k of chip. when you read it and write it to another 32k chip, all is well, as it should be.

Is the chip you're reading from your "stock" memcal say "27C128" on it? If so, its a 16kbyte chip. Make sure you're selecting it correctly in your software. Make sure it starts at 0 and ends at 3FFF. If so, the buffer you save should be 16k, period!

If its 32k, try this: using your PP2 software, read the chip, but set the "device start" to $4000 and end at 7FFF.

Also, email me the bin you read from your chip (the "mystery prom" that works when loaded onto a C256). mmansur at hotmail.

we'll get to the bottom of this. the problem isn't tunerpro. i promise.

 

You have mail. I sent the copy of the 29c256. It looks like 64kb. The "mystery prom" is a 32kb file. Either way, it doesn't look right on TunerPro.

 

Ok, I have some more information here which might help. By the way the mystery prom does not say on the outside what it is at all. Just looks like production numbers. If I set the programmer to 27c128 the bint comes out 32kb. If I set the programmer to 27c256 then the bin comes out 64kb(device specified as starting at 0). If I set the programmer to 27c256 (device spedifed starting at 4000) the bin still is at 64kb. If I just set it to 29c256(device starting set to 4000) then the bin comes out to 64kb. Now I know it's not a 29c256 but I just tried that for the heck of it. The prom is a UV erasable prom.

Then when I look at these 4 bins in TunerPro they all look the same numbers wise. But the problem remains that the information does not seem right. For example number of cylinders(pretty straight forward) it says FF. Should be $00. Another example is the fan off(a/c off) it says -40. Well, it shut off at 157.1 when I was standing there with the scan tool.

Now, I don't think it's TunerPro. The arap bin reads fine. Is something "misaligned" here? I feel like that is the problem because making one simple change like a % in delta TPS for power enrichment cause the car to run very very bad with check engine light. It's like I changed something else.

Again thanks for the help.

 

email me one of the resulting 32k bins. I'll take a look.

 

I emailed you the bin from when I specify a 27c128 eprom on pp2. Let me know if you got it. Thanks!

 

for the record, this has been worked out. Chip was being read incorrectly.