[Gmecm] CTS and MAT lookup differences

[Robin Handley]

Every bit helps. :-)

Thanks,

Robin

----- Original Message ----- 
From: <holdenstarfire at optusnet.com.au>
To: <gmecm at diy-efi.org>
Sent: 18 June 2006 02:45
Subject: RE: [Gmecm] CTS and MAT lookup differences


> No sure if the $58 is the same as other code of the same era but maybe
> this helps
> Adrian
> 
> ; #########################################################
> ; # #
> ; # MAT VARIABLE  (MATDEG) #
> ; #  #
> ; #  THIS TABLE PROVIDES A VALUE THAT SIMULATES A #
> ; #  LINEARIZED MANIFOLD AIR TEMPERATURE VARIABLE FROM #
> ; #  A RAW A/D MAT READING USING A 1K PULLUP OVER THE #
> ; #  ENTIRE TEMPERATURE RANGE. #
> ; #  #
> ; #  IT IS USED IN SYSTEMS THAT HAVE BOTH COOLANT AND MAT #
> ; #  SENSORS AND NEED TEMPERATURE VARIABLES WITH COMMON #
> ; #  SCALING.  THE MATDEG VAIABLE HAS THE SAME SCALING #
> ; #  AS THE COOLDEG VARIABLE, BUT SINCE ONLY A SINGLE #
> ; #  1K PULLUP IS USED (INSTEAD OF THE DUAL-PULLUP SCHEME #
> ; #  USED FOR COOLDEG), MATDEG CAN BE INACCURATE AT #
> ; #  BOTH TEMPERATURE EXTREMES. #
> ; # #
> ; #  NOTE THAT SOFTWARE MUST SUBTRACT 12 FROM THE RAW #
> ; #  A/D VALUE BEFORE THE TABLE LOOKUP TO IMPROVE THE #
> ; #  ACCURACY OF MATDEG AT THE TEMPERATURE EXTREMES. #
> ; # #
> ; #########################################################
> ;
> FP41K:
> ; DEG C
> db $FB; 148.5
> db $CB; 112.5
> db $B4; 95
> db $A3; 83.5
> db $97; 73
> db $8C; 65
> db $82; 57.7
> db $79; 51
> db $71; 44.7
> db $69; 38.5
> db $60; 32
> db $57; 25.5
> db $4D; 18
> db $41; 8.5
> db $30; -4
> db $08; -34
> db $00; V-COLD