Transaxle

Does anybody know the type of CPU used in the KLR box? It looks like a 8048 but it could also be a 8041 or something similar....

Olli Snellman

Do you mean KLR chip ? If so, the original one was Intel's Ld2732a45.

You can use almost any C27 or D27 series eprom, newer might be faster, but they do work OK. All KLR chips are 24 pin chips. I have used newer & faster proms both on DME & KLR boxes without difficulties.

Do you still develope that S2 maf kit?

Transaxle

No - I'm looking for the type of the CPU (40 pin). There are several different versions with the same pin layout and I was just wondering if anybody knows the specific type. It would save me some time...

The MAF development is done for the 944, S, S2, turbo and for the 911 C1 and 964. You may find some recent dyno runs here - sorry, it is in German...

Bri Bro

It an 8051 with 4K of internal ROM.

Olli Snellman

German is not a problem, my wife is a half Swiss, so if i have difficulties to understand, she will translate difficult words

Interesting info. There might be some Finns who are interested of your product.

Transaxle

That is for the DME. According to the pin layout (oscillator placement) in the KLR, it is probably a member of the intel 8040 family. It also looks like there is no internal ROM used. I just don't know how to see if it is a 8041, 8048 or something similar.

Tom M'Guinn

I also believe it is a variant of the intel 8051. Someone started a website dedicated to cracking the code, with useful info on the chip set. I have the link at home, but someone can probably point to it for you...

Transaxle

Do you think at http://www.motroniccode.com ? That is a very great site - but seems sadly to be without traffic currently.