![]() ![]() So i can see the sequence of reading rom and reading/writing ram. I bought a cheap 32ch logic analyzer, so i can hook it on address bus, data bus and chip control lines. If there is something multiplexed inputs/outputs, i can try to trace them also. I can trace more, it's such easy with 2ch oscilloscope. If i remember, some of inputs and outputs are multiplexed. If there is no signal from any cylinders, secondary current monitoring fault code appears, and secondary current monitoring is disabled. Ecu is "listening" this pin after every ignition event, and if there is no "snap", it will shut fuelling off from this cylinder and relevant fault code appears. That "spark detected" is used for diagnostics and limp mode. Some CPU pin data from my notes: (413 ecu)ĩ = P0.7 AHC7 = Signal from knock sensor controller IC: knock signal level?ġ1 = P0.4 ACH4 = Other signal from knock sensor controller IC: reference level?Ģ4 = HSI.0 = Ignition: Spark detected (secondary shunt resistor signal) Its a shame as silver label 413 ECUs used to be dirt cheap but they seem to have all gone. I did manage to map out some of the registers as you will see on the IDB, the table headers on this ECU (I think) are actually the register addresses used so I am going to take a look at that ROM 5081 with the registers in mind and see if it makes anything clearer.Įdit - Did we decide the V8 404 (M3.3) is the same as the 413 but lacking some features?ĭidnt someone run a 404 BIN on a 413 ECU ok?Īre the M3.1 ECUs (402/403/405) 8051 processors or 80196?īoth of these are much more common here and easier/cheaper to get. I might try to get hold of a 413 to take even higher res photos and strip like has been done in that M1.7 thread over on R3v, I started trying to map out the pin inputs on the processor a while ago but stopped when I found I would have to destroy the board to get the internal traces.Ĥ13 ECUs here are over £140 at the moment which is a bit expensive to kill for science and I have had no luck finding a defective one to cut up Worked out something else as well, it looks like ROM 5081 is the beginning of the main program loop. the master table showing all the other tables in the ECU. Secondly, ROM:33C2 instantly adds Register 1A to what I have showing as the ID location for the table of tables, i.e. Now some immediately interesting things there, ROM:5358 is using the location of what I have flagged as the "diagnostic ID", seems it is used a few times following that long call to what you have indicated as the rom loading the tables ROM:33DF jnc ROM_33EE Jump if carry flag is clear ROM:33DC addb INTMEM_50+1, Add bytes (2 operands) ROM:33D6 add INTMEM_4E, INTMEM_52, ZERO_REG Zero register ROM:33D3 add INTMEM_4C, INTMEM_52 Add words (2 operands) ROM:33D0 ldbze INTMEM_52, Load byte zero-extended ROM:33CB ldb INTMEM_50+1, Load byte ROM:33C8 ldbze INTMEM_50, + Load byte zero-extended ROM:33C5 ld INTMEM_4C, Load word ROM:33C2 add INTMEM_1A, Table_Tables_ID Add words (2 operands) ROM:5370 andb INTMEM_26, #-2 '¦' Logical AND bytes (2 operands) ROM:5369 ldbze INTMEM_54, 0Ah Load byte zero-extended ROM:5366 jbc INTMEM_26, 0, ROM_53BC Jump if bit is clear ROM:5364 jnh ROM_5384 Jump if not higher (unsigned) ROM:535F cmpb INTMEM_48+1, 151h Compare bytes ROM:535D jc ROM_5375 Jump if carry flag is set ROM:5358 cmpb INTMEM_48+1, 150h Compare bytes ![]() ROM:534C ldb INTMEM_26+1, INTMEM_1451 Load byte but there very power full programmes for the bmwFor coding finding fsc codes, clearing faults, maps e.g.Code: Select all ROM:5349 stb INTMEM_48+1, INTMEM_D3 Store byte mega pack for bmw programmes for most bmw from 1986-2018 ,All in EnglishAll in easy to follow instruction iv put together easy follow guild just load the number folders No more find this file all together ready to load to windows pc for xp to windows 10All in English ready to useThe list as follows Bmw coding tool v.250 Cic mafiaFsc tool 2.18Dr gini good from fsc code mapes and ZUSB Inpa good for clearing faults on your car and battery registration eg from old 1986 to new F series Tool 32 programming toolInpa 5.06Zwg search cable search toolFsc tool 2.18 Fsc code toolNCS DummyWIN KFPNSC EXPERTThese programmes need bit of home work there is some how to use files, but most can be found on utube how to use. Item: 194343673502 BMW Standard Tools- INPA 5.0.6 NCS Expert WINKFP. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |