https://www.youtube.com/channel/UCvvXCfcTbGeqPEllHECtDtw

is that the correct channel?

might want to try that again... red text is quite garbled.

i don't use it..... i actually have a french program to look at stuff in raw values, displays the actual values, along with color coded cells, easily allows you two switch between various bit...

i can make decent assumptions, but beyond that, with no solid information on anything in the calibration, that's pretty much all they are until they're tested on a real-world vehicle.

that solves up/downloads.... now to actually make sense of the calibration.... woof.

figuring out what gigantic tables do is prettty easy, but little stuff(scalars/flags), that's the painful stuff...

another common term for the port that came around right before OBD2 was implimented was "data link connector" (DLC).

it's all relatively synonymous if you don't look too far into it.

at that point, i'm officially beyond what i know of the 6816s.... one could look up what kind of PROM is being used and see what the programming sequence for it looks like, then write out a program...

the early OBD2(96 and 97?) GM PCM units are said to have the same port, and it was supposedly capable of dumping the BIN and possibly writing a new one in?

not much to do to help, unless you have any specific knowledge of the 6816...

the info from that thread does match a lot of what i have found to be true as well.... so it seems i'm at least on the...

found the pink book for the 68HC16....

good news is that it acts like an updated/upgraded 68HC11..... the bad news is that it's basically the halfway point between a 68HC11 and the 68332 as used...

if i get it figured out, from the sounds of it, i'll be putting a couple of dodge tuners out of business.

256KB BINs..... plenty to play with. the "52" BIN i have opened is empty from 29FF6 to the end of the BIN at 40000..... LOT of extra space.

odd that they use a 6816 as a main processor and a pair...

6816 is totally workable...

now, can you get access to the BIN(s)?

if the processor can be determined, then the BIN can be disassembled.

BIN is probably in a FLASH PROM, so that would either require desoldering and then read in a burner or getting the PCM to spit...

what kind of processor in them?

otherwise, megasquirt or GM OBD1/OBD2....