[Diy_efi] J1850 PWM Info Request

[Adam Wade]

--- Rick Richard <saba_apollo at hotmail.com> wrote:

>> When was the last time you bought a blank book?

> They do sell them... =)
> And I have one, although it isn't blank anymore...

Yes, yes, I know.  ;)  I gather you got my point... 
And with the blank book, you're paying for the raw
materials, cost of publication, and design work (if
any).  :D

> sometimes you are technically just buying paper and
> ink, and sometimes you're paying extra for the way
> the ink is arranged.

Like I said, there's more to a book than the cost of
gathering the information.  I won't detail the process
and bore everyone further, but suffice it to say it's
far from free.  ;)

If someone makes a CHOICE to give out their
information for free, for whatever purpose, that's
their CHOICE.  No one can compel them to do so,
however.

> I do believe I've just found most of the information
> I was seeking.  Oki Semiconductors' website has most
> of the information published in their datasheets as
> well as a general j1850 network overview.

Well, that makes life fairly simple, then.  ;)

As an aside, amazing how often Oki comes up when I am
discussing motor vehicle digital controllers.  Honda
seems to be very fond of having them make chips to
order.

> Yeah, SAE is the organization who is charging so
> much money if you want the specifications from
> them.  It's their book.

Well, it's cheap as SAE books go.  Keep in mind, the
market for their books can be measured in the
hundreds, on a good day.  That means, aside from the
millions that go into the research they publish, the
cost per publication for pre-press, design and
printing is not spread across millions of copies.

> www.okisemi.com/us has some good info related to
> their msm6636 product.  I may look into that ford
> obd-ii manual that was mentioned previously as well.

Since you have most of your answers already, perhaps
you could ask specific question  that covered the rest
of the subject.  Someone here might know (and very
likely, someone on the Frod list mentioned will have
the answers, even if we don't).

I don't rue you finding out, but sometimes approach is
everything.  ;)

=====
| Adam Wade                       1990 Kwak Zephyr 550 (Daphne) |
|   http://y42.photos.yahoo.com/bc/espresso_doppio/lst?.dir=/   |
| "It was like an emergency ward after a great catastrophe; it  |
|   didn't matter what race or class the victims belonged to.   |
|  They were all given the same miracle drug, which was coffee. |
|   The catastrophe in this case, of course, was that the sun   |
|     had come up again."                    -Kurt Vonnegut     |

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