Longshot Question
 

Does anyone have any idea what cpu is in the FRS ECU?
or at least what cpu architecture it is?


denso appears to be using mips32 for most of their ecus. but im not sure if it is mips32

If someone has a fried computer. I would greatly appreciate it if you could take it apart and take a picture of the main board

Out of interest what are you trying to achieve?

I want to convert the bytecode to assembly and reverse engineer it back over to c. That would help everyone out. Right now I just need to know that architecture the CPU is to do that first conversion.


Mips32 assembly works about 80% of the time so it's hard to tell if it is right or not.

Hitachi Renesas SH72531

https://www.ft86club.com/forums/showthread.php?t=68328


If your serious about reverse engineering code talk to the guys at www.romraider.com and a guy called td-d on that forum of he's still arround

I've got 2 spare Woking ECU, also if you want the wiring to get it running on bench to you can flash it and log .message me.


You can buy used ecu for about $100 on eBay



They are also easy to swap in\out


https://www.ft86club.com/forums/showthread.php?t=102810

Okay thank you for all of the help and at some point i would need an ECU to test but that is going to be up the road.

https://www.renesas.com/us/en/doc/pr...b0051_sh2a.pdf


pages 70+ are why i needed to know the cpu architecture

Its definitely under progress, if you would like to follow the progress


https://github.com/reverseslayer/Renesas-disassembler