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Title: What is A2L Files? Post by: Jim_Coupe on September 21, 2016, 03:43:34 AM Hello,
What is A2L files and what can i use them for? Is this the file that defines the code stored in the MCU? I Opened a Me7.5 A2L file and what i find is some sort of assembler code. In the pic below i took a screenshoot from my A2L file from Me7.5.. "relative Luftfullnung" What does Limit (0 . 191,25%) mean? // Title: Re: What is A2L Files? Post by: nyet on September 21, 2016, 11:12:29 AM What is A2L files and what can i use them for? Is this the file that defines the code stored in the MCU? It documents variable and map locations in the ECU flash image, among many other things. It forms the basis from which many publicly available auto-generated .kp and .xdfs come from. Quote "relative Luftfullnung" rl = load In that case, the 8-bit load. Quote What does Limit (0 . 191,25%) mean? In many European languages, "," is the decimal point So (0 . 191,25%) is 0 - 191.25% Note that 16-bit rl_w can go higher than 191.25% Title: Re: What is A2L Files? Post by: eliotroyano on September 22, 2016, 04:56:49 AM It documents variable and map locations in the ECU flash image, among many other things. It forms the basis from which many publicly available auto-generated .kp and .xdfs come from. rl = load In that case, the 8-bit load. In many European languages, "," is the decimal point So (0 . 191,25%) is 0 - 191.25% Note that 16-bit rl_w can go higher than 191.25% Nice info, what A2L viewer do you recommend? Title: Re: What is A2L Files? Post by: nubcake on September 22, 2016, 10:45:45 AM http://nefariousmotorsports.com/forum/index.php?topic=5912.0
Title: Re: What is A2L Files? Post by: Jim_Coupe on September 24, 2016, 01:10:30 PM Why do they use one that is 8bit byte and one that is 16bit WORD? for use elsewhere i guess..
Title: Re: What is A2L Files? Post by: Mikhail on September 29, 2016, 08:58:12 PM Why do they use one that is 8bit byte and one that is 16bit WORD? for use elsewhere i guess.. Would it be, that the ecu has rl or rl_w not both. Which does r32 7.1.1g have?Title: Re: What is A2L Files? Post by: nyet on September 29, 2016, 09:52:30 PM Most have both.
Title: Re: What is A2L Files? Post by: Mikhail on September 29, 2016, 10:32:35 PM Note that 16-bit rl_w can go higher than 191.25% So maps with 8-bit load axis stop that 191.25% and 16-bit load using stuff goes above. Does the ecu work good above 8-bit values besides some maps are at max?Title: Re: What is A2L Files? Post by: Jim_Coupe on September 30, 2016, 11:23:24 AM I guess they work but not to high above... I have expanded my load axis... All after that i think ECU extrapolates the last value.
Title: Re: What is A2L Files? Post by: nyet on September 30, 2016, 11:25:44 AM I guess they work but not to high above... I have expanded my load axis... All after that i think ECU extrapolates the last value. No. Map lookups ride the edge, they do not extrapolate. Don't believe me? Go look at the map lookup ASM :P By definition you can't "expand" an 8-bit load axis. Not sure what you think you did :P |