I have another ?, I just ordered pocket programmer and tunercat, and there is all this talk about the Flash 29C256 Eproms that everyone is using, but I searched the archives completely and can't find anywhere that someone has actually said for sure if the 27C128 Eproms will work with this setup to. Can the 29C256 E's be made compatible to take the place of the 128's so that we(165ECM's) can flash them too?

Glenn I read in a previous post that sounded like you had tried this or were going to try it out, did you get to? And if so what were the results?

It sounds awesome for you SD 730 guys but what about us poor MAF 163 guys?
Sorry its so long, hopefully someone can help me out as I would really like to do this! Thanks in advance!

Brandon

 

As long as you loaded your 16K bin into the upper half of a 29C256 I see no reason it would not work.

 

Saturn,

Thanks for the input.
Anybody know for sure?

Or maybe I will have to be the one to try it out....

 

Apparently a number of MAF cars using Hypertech eproms are infact using 27C256s, which if so, means that the AT29C256 can be used.

I would suggest loading the 16K BIN on both parts of the eprom, but as Saturn is suggesting only the top part is probably needed.

The difficulty you will have is taking your 16K bin and making it a 32K BIN file as you must use FILEPROM.EXE which only loads BIN files. Assuming you have the Pocket Programmer.

One way around this may be to take your 16K BIN using EPROM.EXE, move it from 60000-63FFF to 64000-67FFF and then reload the 16K BIN again to 60000. Then switch to the 27C256 eprom within Pocket Programmer and save the buffer as a 32K BIN. Then use FILEPROM.EXE to load the 32K BIN you created into the AT29C256. Not the simplest of procedures, but it should work.

Also, there are programs that will concatenate two BINS together, though I cannot recommend one. I have seen them though, but I paid them no mind as I have not had a need for one.

I haven't specifically done this, (though I have done something similar) but it should work and may resolve the issue of making an AT29C256 Flash Prom work for you MAF guys.

 

Wouldn't the DOS COPY command concatenate the file to itself?

copy arht7465.bin /B + arht7465.bin /B final.bin /B

/B specifying a binary file

Perhaps a DOS batch file could created that would prompt for the name of the bin you are using.

[This message has been edited by Brent (edited April 09, 2001).]

 

I think you are right Brent, but it's been so long since I've done anything with DOS that I can't remember all the tricks anymore.

I had tried the concatenating with DOS before I wrote the reply, but I couldn't get it to work properly.

 

Thanks guys. I'm a little lost on what you are saying but I haven't messed any with The Pocket Programmer yet as I just got it in today.

 

Glenn I'm new to this, but I want to be able to use a flash eprom.
Form what adress to what adress is the bin located in my 27c128, how about a 27c256. From your post it appears that the 27c128 bin is from 6000 - 63FFF. If that is so then why does the bin editor in eprom.exe show so much data at adresses above and below those adresses, shouldn't they be blank. Also to merge the two files, isn't that what the convert.exe program that came with the PP is for (option #9)?
Thanks for any help.

 

top

 

Has anyone figured this out yet? How to use the 29C256 chips with the 165ECM? I ordered the programmer already and need to know if this works or not.

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87 IROC-Z 305 TPI gears, exhaust, converter
14.70 at 94.1 mph
Minirammed 377 for spring

 

I'm also very interested. Sounds like someone has an opportunity to solder the flash proms to the memcal along with detailed instuctions on how to use it. hint, hint

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89 Vette 6 speed
CNC heads, crane cam, Miniram, headers
Soon to be 396 Small Block!

 

Can anyone recomend a supplier of the 29c256, if so I'll buy a couple and try to get it working. Sure would be nice not to have to use the eraser.

 

Try JDR Electronics. Just search for "29C256" from the main page.

 

Well my Pocket Programmer is going to be here tomorrow so I am just going to order the 29C256 chips and mess with those. I'll post back if I get it working.


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87 IROC-Z 305 TPI gears, exhaust, converter
14.70 at 94.1 mph
Minirammed 377 for spring

 

Well...I was able to program a 29C256 with the "doubled up" ARAP.bin. I will try it in a car this weekend.

 

Finally was able to test. Click Here to see how it came out.