Intel B57684 EPROM

[Buchholz, Steven]

I tried this direct reply about a week ago ... I'm thinking that it may
not have made it, so I'm posting it to the list.  My apologies to the
rest of the list participants!

TIA!
Steve Buchholz
San Jose, CA (USA)

> ----------
> > The EPROM
> > > device has an Intel logo on it and a device type of B57684.  I'm
> without
> > > my nerd novels here at home and was wondering if any of you happen
> to
> > > have a databook that describes this device.  It is a 28 pin, 0.6"
> > > spacing package.  I suspect it is similar to a 27128 or 27256, but
> I'd
> > > rather know than guess when I try to read it in.  
> > 
> > They usually use 27C256 and 27C512. Try 27C512 and look at $8000. If
> there´s 
> > the same data as at $0000 then it´s a 27C256. If you tell me the
> ECU-no. 
> > (0261 ...) and the chip-no. (126735 ...) (each no. has 10 digits) I
> can tell you 
> > the chip type exactly.
> > 
> Vielen danken!
> 
> I have put the box back together again (so that I could get to work!),
> so I can't get the number of the part on the EPROM.  It was silly of
> me not to write it down!  Here are all of the numbers on the exterior
> of the box.  There is an orange Bosch (Motronic) label which has a
> number of 0261 200 250.  There is also a plain white label that has 4
> numbers with bar codes printed on it.  From top to bottom the numbers
> are: 146 4417 , 166.12 , 26 SA 1053 , 1759000166
> 
> I truly appreciate any help you can give me with getting more
> information on this box.  It is installed in a 1992 BMW k1 motorcycle
> (US spec of course).  Do you know if there is any way to get the code
> for the European version of this bike's code?  I have also heard that
> this controller does support closed loop operation simply with the
> addition of an OXS, can you confirm this?
> 
> Regards and thanks,
> Steve Buchholz
> San Jose, CA (USA)
> 
>  
>