165 UART chip (used for 8192 ALDL)

[Dave Zug]

If you are planning to go to the UART level, go a bit farther and you have a
super high speed data monitoring tool. attatch directly to the address and
data lines and use a uP to watch and record the data. program it to capture
specific locations as specified in some online doce (meing generic here). I
think the data and address lines are all available on the card-edge test
connector on some ECM's. this pertains to your more broad question. No I
have never done anything of that kind but I think it would be cool to do.


----- Original Message -----
From: Peter Gargano <peter at ntserver.techedge.com.au>
To: <gmecm at efi332.eng.ohio-state.edu>
Sent: Tuesday, November 09, 1999 7:01 PM
Subject: 165 UART chip (used for 8192 ALDL)


> Hackers,
>
> The 1227808 is missing the 1227165's UART (this is U2,
> a 28 pin (7x4 QFP) and is used for the 8192 ALDL data
> stream because the CPU (apparently) does not have the
> usual HC11's SCI interface (at least this is what I've
> been lead to believe from various questions...).
>
> Does anyone have any information on the UART, with a
> view to finding a replacement, clone, upgrade, etc.?
>
> PG.
>
> PS. This question relates to the more general question
> "How do you get better comms with an '808 so you can do
> some on-the-fly tuning/hacking on a running ECU"
>