LT1 Data Tables

Ludis Langens ludis at cruzers.com
Thu Jun 21 21:24:52 GMT 2001


Dave Plummer wrote:
> 
> Anyone happen to know how the tables are -referenced- in the LT1?  For
> example, here's the Spark Advance table at 208A in the E-side.  What's
> got me confused is that there's no reference to it in the code.  I also
> cannot find a vector pointing at 208A, so its not indirected.
> 
> seg000:208A ; Across: MAP Pressure
> seg000:208A ; Down:   RPM
> seg000:208A ; Scale: 1/2
> seg000:208A ; Each entry contains double the actual advance, so $42  ==
> 50 == 25 degrees
> seg000:208A ;
> seg000:208A ;                    25,  30,  35,  40,  45,  50,  55,  60,
> 65,  70,  75,  80,  85,  90,  95, 100
> seg000:208A ;
> seg000:208A tblAdvSub4000:  fcb $20, $20, $32, $32, $32, $32, $30, $30,
> $28, $28, $24, $1C, $18, $18,  $C,  $C ;  400

Check for references to $2087.  The older ECMs have a three byte header
in front of all two dimension arrays.  Also check for $2086, and maybe
even $2085 - sometimes there is a header in front of the header.

-- 
Ludis Langens                               ludis (at) cruzers (dot) com
Mac, Fiero, & engine controller goodies:  http://www.cruzers.com/~ludis/

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