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Thread: Corvette CCM Reverse Engineering Anyone?

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  1. 09-30-2021 #28
    kur4o
    kur4o is offline
    Fuel Injected!
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    Mar 2013
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    some food for testing
    Send in mode 6 download and execute.

    ldaa #YY 86 YY
    staa byte_fc 97 fc
    ldy xxxx 18 ce XX XX
    ldx off_ffb0 fe ff b0 update fix

    jsr 0,x ad 00 fix
    rtn 39

    YY=length of reply message
    XXXX= start address to dump data.

    We can also set it: when you upload a data, the pcm will write and than read the written data and reply back with the data stored. Something like an echo message.
    Last edited by kur4o; 09-30-2021 at 11:41 PM.
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