TunerPro User Forum

I was able to use Tunepro to calculate my checksum using an unused area as temporary buffer. It's dirty but it works :D I think the easiest way to improve Tunerpro on this point would be to add an "accumulate" option for each defined checksum. This way we could use the checksum storage add...

yes you are right, I just describe how the ecu program is working.

Another idea would be to create a checksum plugin interface for Tunerpro.

checksum = SUM(section1 bytes, section 2 bytes, section 3 bytes) + constant
is closer to the truth.

Thanks.

I'm working on a weber marelli iaw ecu and I have exactly the same problem. I need to define 3 memory sections and the checksum is the sum of these sections. Moreover a constant to addition at final ! 27c256 chip 8000-FFFF 800E checksum store address (2 bytes) 8010-B5FF first section B800-DFFF secon...