OBD2 LT1 XDF $EE EEX creation

[Tom H]

Hi kkur4o,

Quickest of looks --> great work. One question, is the code loaded into ram $18xx-$1Fxx? Is this GM code? What was the process provided to GM techs?? Is this code downloaded from the tester or hidden away somewhere in FLASh. Just trying to get my bearings on this.

[kur4o]

On 94-95 in the expanded area there is no code from factory, I offset it there for nicer look. Main loop is loaded at the 0-200 area and all the other routines are loaded at 200 start address one by one and overwritten. The data message buffer is at 300. It is send by the tool. Nothing is in the pcm code, all send by the tester.

On 96-97 there is more complex comm loop and the upload buffer is in 1800-on area, since the length of the message is like $400-$800 bytes. And that spi relaying to eside.