BLM cell boundaries 12P

American Delco GM ECUs and PCMs, ALDL, OBD 1.5.
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BLM cell boundaries 12P

Postby 34blazer » Wed Aug 28, 2019 12:37 pm

Where are the breakpoints defined in the xdf for BLM cell? I can only find the delta map/RPM for the breakpoints table but not the actual breakpoints to determine which cell is in use for the fuel calc.


Thanks
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Re: BLM cell boundaries 12P

Postby 34blazer » Thu Aug 29, 2019 5:45 am

Nobody? I'm in the only one still playing with GM OBD1 calibrations?


Guess it's time to move on.....
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Re: BLM cell boundaries 12P

Postby delcowizzid » Thu Aug 29, 2019 9:36 am

Why do you need to know what cell you are in
If Its Got Gas Or Ass Count Me In.if it cant be fixed with a hammer you have an electrical problem

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Re: BLM cell boundaries 12P

Postby 34blazer » Thu Aug 29, 2019 12:14 pm

I know which cell it is using, I'm looking to change those cell boundaries.
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Re: BLM cell boundaries 12P

Postby VL400 » Sun Sep 01, 2019 12:43 pm

The cell boundaries are hard coded in 12P. They were moved out of the cal segment and in to the code segment. This was done due to items containing direct memory address' that will change with every code release. Having it in the cal segment added another step to migrate cals to new versions for an item that 99.99% of people will never need to adjust.

If you have 12Pv112 then here are the items including the address...
Code: Select all
   E07C 30                31433 BLMx:   .byte   0x30      ; BLM Params - RPM 1
   E07D 40                31434    .byte   0x40      ; BLM Params - RPM 2
   E07E 60                31435    .byte   0x60      ; BLM Params - RPM 3
   E07F 90                31436    .byte   0x90      ; BLM Params - RPM 4

   E080 20                31438 BLMy:   .byte   0x20      ; BLM Params - MAP 1
   E081 40                31439    .byte   0x40      ; BLM Params - MAP 2
   E082 60                31440    .byte   0x60      ; BLM Params - MAP 3
   E083 80                31441    .byte   0x80      ; BLM Params - MAP 4
   E084 A0                31442    .byte   0xA0      ; BLM Params - MAP 5

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