Update on 101 and too long

[Steven Gorkowski]

hi mike
I think this will work  if you use the buffer (opamp) you can use any
old pot around the shop.

5v reg
   |  pot any size
  /             +--------------------+
  \<-------| +       opamp            |
  /             |          lm324             |________ output to cpu box

 \         +--|  -     or eq.               |    |
  /         |   +--------------------+    |
 |          | ____________________|
gnd

power  the opamp with same 5v supply  gain = 1 and has low output
impedence
contact me if you need pinouts.

Mike Dillon wrote:

>  Hi Bruce,
>
>         I just got my dissesmbler, for 68XX code up and running, this
>  past week and dissassembled a couple of PROMs (Not 747). If someone
>  could use it let me know, I got the original code off the web
> somewhere
>  and just fixed up some of the sections to allow it to read Mot "S"
> record
>  files. Whoever wants a copy would need a C compiler. (I guess I could
>
>  pass out a compiled ver. but I don't have the time to support and
> there
>  is no doc. on it) I am not sure what you are looking for on a O2
> emulater
>  I thought this would be pretty simple high Z source beteen 1-2 Volts
> ??
>  (Am I missing something)
>
> Mike D
>
> > From diy_efi-owner at esl.eng.ohio-state.edu Sat Mar 28 09:55 CST 1998
> > From: "Bruce Plecan" <nacelp at bright.net>
> >
> > Well seems that things have changed in the last 24 hours.  At this
> > point we have several people looking for ecms, and I got some
> > interesting mail.  Also, there seems to be a new interest in some
> > folks doing bench testing so we might pull this off.  Little to
> minor
> > hitch it will be a while before we get a "good life like" O2 signal
> > generator.  But, we can easily live with that.  Gonna take a couple
> > days for everyone to get ecms, and wiring, any way.
> >   There are more tables involved than I originally thought, but I
> was
> > guessing, so no big deal.  Looks to be 73 all together, plus switch
> > settings.  Some we may never figure out all of it, or need to.
> We're doing
> > this the old fashion way to a certain extent, we're brute forcing
> some of
> > it.  As much of it as we can find in printed manner, figure from
> > some logic, and then trial and error.  Hopefull the error factor
> will
> > be a min..  So if ya got some secret reserve of info, your just
> slowing
> > us down not stopping us.  Sounds neat being able to say that.
> >   We are all adults here so I'm not keeping tabs of exactly who's
> > doing what.  I've got a 3x5 card with a rough count so if your not
> > going to finish something, let me know please!..  This is a group
> > effort, or I hope for it to be..
> >   May have a little ditty of software coming, if you have fc
> already,
> > you can compare files, and find out what's different, between them,
> > with this you'll be able to see what is the same between them.
> > Slick
> >   In case you've heard the name disassembler, what that is is a
> > program that allows you to enter a prom file, and it spits it back
> at you
> > in one long column.  Then you can count the number of tables, where
> > they are, and how long they are.  That also has reduced our work
> load
> > by a whole bunch.  I got a copy of a disassembled 747, but I'm not
> > going to print it all out here, if some has this type of program, it
> might
> > be interesting to have one somewhere, where it could be seen, that's
>
> > for others to figure out..
> >   BTW, I don't have parts, software, consulting time or anything
> else
> > for sale.  I don't get free samples to give away.  If I find a
> bargain I'll
> > let ya know, and may make enough to cover a credit card purchase
> > of something.  ie the chips.  And again if someone tracks them down
> for less
> > than a buck please let us/me know.  40 are spoke for and
> > need 100 to get that price, anybody wanting to take that over is
> fine, just
> > e-mail me.  Nother thing, I'm not a computer guy (PC, or anything
> > else other than what gm put inna car), I don't know where to get
> > anything like that.
> >   Interesting story, about last night/morning, spent a bit of time
> trying
> > to get something to run.  Several hours passed, and finally decided
> > to get some help, more time, no results, called another guy, and
> > found out what to do.  Went to us use new file, in another program
> locked up
> > the computer. Nother hour or so didling around. Turns out it needed
> to be
> > .xyz, and I had .abc..  So don't look at me for help with that sort
> of stuff
> > we got brains around here for that, I'm not one of them..
> >   Please feel free to e-mail me, I'm at nacelp at bright.net  my phone
> > number is (937) 692-5869.  I'm usually on line so if busy e-mail,
> and
> > tell me ya wanna talk, and to hang up the modem.  If ya want to
> critize me,
> > write me..  Ya gonna write me at least sign what you write.  If you
> want to
> > write, fine, I'd like to write back if there is a problem so include
> your
> > e-mail address.  If I error, Please Write, if you have to tell
> everyone that
> > I did thats fine, but like most folk, I'd rather hear it, by
> > personal e-mail.
> >   I know some of you are unhappy about this effort, but this is only
> kinda
> > about writting proms.  Like I said in page one this is for
> educational
> > purposes.
> >   Hope that covers everything for today.
> > Cheers  Bruce    This excessive BW brought to you by Cone
> >      Shaped Hat World Headquarters
> >
> >
> >