165 UART chip (used for 8192 ALDL)

[Peter Gargano]

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"