If selecting 68K as processor type no segments are defined. Tested with 6812 and user vectors are odd. Motorola 6805 creates segments, but looks odd, nothing like your example. With 6808 looks almost the same like 6811 USER_VEC:FFCC ; Segment type: Pure data USER_VEC:FFCC ; segment USER_VEC USER_VEC...

So maybe selected wrong processor type in IDA? (There are a lot of 68HC11 versions and my processor has no label on it, is hybrid inside ECU).

Thank you, Attached all 3 types of software. As you can see, in last part of them are some changes. Those are maps Opel Astra 1.7 DTI Ori.zip In first 32K of flash there are differences just in one case, others are the same: differences.png Found those lines at 0xFFFE (there i have fdb SCISS that is...

In some place it say 8K memory, in other 32. I have some experience with Atmel uC and Infineon C167. Never worked with motorola.
Here is a memory mapping found on the internet: This internal memory is duplicated in flash or is just refferenced?

I have a car with this ecu and i wish to disassemble in order to inject new code sequence (done before in VAG ME7.5 ecu). As far as i know the processor type is Motorola 68HC11, but what version? i`ve found a lot of versions with different memory mapping. My flash has 256K of data. Could you tell me...