But I'm trying to understand the software in the Early Subaru ECUs, specifically the JECS unit that was in the EJ20 Imprezza Turbo form 93 to 96.
I know it's a M37791 which is based on the MELPS M77xx range from Mitsubisihi. But I can't find a copy of the instruction set anywhere.
Anyone got any ideas where I might find one, either that or a disassembler ? I was planning on writing my own, but I'll use a ready made one if I can find one.
I've managed to read out the Rom Image, but without the opcodes, I'm stumped !
Once I've done this one, I'm moving onto the newer ECU's. I've got one on my bench already - but I must finish the early one first !
Thanks
Helen.
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