GM PCM OBD-II HW registers

[Ara Bedrossian]

opps sorry, mc68hc58.

Ara

----- Original Message -----
From: "Ara Bedrossian" <ara.b at ix.netcom.com>
> Yes motorola does have an J1850-to-SPI and it's on their website..
>
> its the 68hc68
>
>
> Ara
>
> ----- Original Message -----
> From: "David Cooley" <n5xmt at bellsouth.net>
> > GM has been Motorola Based for the most part.  I would suspect, that
they
> > have used a one off proprietary piece, since Motorola doesn't list any
> data
> > on their site for HC11 based J1850 controllers.  They list HC16, HC32
and
> > HC05 based units, and I have heard they have a stand-alone chip that
does
> > J1850 to SPI (though not listed on their site or available to the
> public...)
>
>