BMW Motronic 1.1

[Land Shark]

At 10:02 AM 1/10/97 -0700, you wrote:
>I'm also interested in the Motronic. Not from a business point of view just 
>because I have one and am always interested in how these things work.That's 
>why I'm a member of this list. Another chap on this list has been very 
>helpful with location of tables etc.

 Unless you understand the underlying MATH, the tables will be 
 misinterpreted.. completely .. like most of the aftermarket chip
 manufacturers have.. 

>Ok, so lets start with the processor instruction set. It's not standard 
>8051 - I've got that far. Where can I find the instruction set of the 
>processor? You gave us one "gift", the processor id 80c515. Thats a siemens 
>or phillips chip I guess. I'll take a look on their sites. Is it's 
>instruction set as elusive as the famous intel 8061 ins set?

 Nope .. 80515 instruction set is public.. 

>I have a dump of the eprom. You eluded to the fact that there is code in 
>the processor in ROM. Is that true? Presumably without the special 
>equipment I stand little or no chance of getting a dump.

 You don't NEED the dump.. you need to unfold the code though..

 DO this.. take the first 8k of code in the EPROM and copy it to the END
 of the EPROM image so that you have 40k.. not just 32k

 Jim