urQ Digital Dash

[quk@sievers.com (Phil Payne)]

In message <01BB89D6.8F52DE40@Jupiter.MerlinFalcon.co.uk> Nigel Banks writes:

> I have been looking for information about the control electronics for the digital
> dash and trip computer and my research so far has led to total confusion with
> answers ranging from "it has a Z80 processor", which I can't find, through "it's
> an non-standard ASIC" all the way to "it's an analogue system"!  Does anyone
> have a block diagram for the digital dash to get me started?
> 
> The reason for the research was to asses the feasibility of using a current generation
> processor to improve the functionality, and accuracy of the trip computer.  Anyone got
> any ideas?



There's an external schematic in "Audi Quattro Modelljahr 1990 
ZUSATZSTROMLAUFPLAN ELECTRONISCHER SCHALTTAFELEINSATZ (LCD KOMBI) No. 59".  
Doesn't tell you anything about the guts of dear old J128, though.

It looks as if both the fuel consumption and remaining range displays have 
"fudge" adjustments.  Fascinating stuff.

You should have asked me in the quattro marquee at Coy's - I had the books with 
me then.


--
 Phil Payne
 phil@sievers.com
 Committee Member, UK Audi [ur-]quattro Owners Club