ALDL 160 --> 8,192 baud conversion?

[Peter Gargano]

I understand that it's possible to upgrade the '808/'277 by
adding the high speed ALDL 28 pin chip (U2). I even recall
that one (re)manufacturer adds this chip and changes the
firmware (PROM) to make use of the 8192 baud data stream
(so their data acquisition software has a chance of capturing
data at a reasonable speed).

What is this 28 pin chip? Can I get it from a chip manufacturer?
Is it a UART or a level converter chip (or both) for true RS232?

Ludis Langens wrote (Re: SERVICE NO. 1227277 1.8L AUT TBI 16059788  BZY):

> [snip] ...  Your '7277 is 
> missing the O2 amplifier (20 pin chip) and the high speed ALDL
> driver/receiver (28 pin chip). The '7165 has both.  I'm told the '7808
> is missing just the ALDL chip.  ... [snip]

TIA, regards,
-- 
Peter Gargano, Tech Edge Pty Ltd.,  mailto:peter at mail.techedge.com.au
Ph: +61 2 6251 5519,   Fax: +61 2 6251 6646,   mobile: +61 15 289 172