[Diy_efi] Early-mid 1990's Bosch BMW Motorcycle Motronic Info?

[urq]

In the very late 1980's and early to mid-1990s BMW Motorcycles had what they 
called a Motronic system on their 4-cylinder 4 valve motorcycles.  The 
reason I say "called Motronic" is that it appears to me that the Hall 
Senders mounted to the crankshaft operate very much like points.  Does 
anyone out there have any information about this system ... basic block 
diagram and such is all I'm looking for ... or can you point me to somewhere 
I can get the info?

If someone here is in the know, I'm also interested in the evolution of the 
system since then ... did they ever go to a more conventional system that 
allowed better resolution of the crankshaft position?  K1200RS perhaps?

TIA!
Steve B
San Jose, CA (USA)