Re: Selectable chips & boost programming

["Programmer" <nwester@eidnet.org>]

Geez--no pressure--I really think the actual designer should be
drawing the pictures <BG>. Mine would just be a guestimate...

LW
-----Original Message-----
From: nacelp <nacelp@bright.net>
To: gmecm@diy-efi.org <gmecm@diy-efi.org>
Date: February 25, 2000 3:19 PM
Subject: Re: Selectable chips & boost programming


>OK, me 2,349 to.  Or I got a scanner and can relay it to Steve R to get it
>posted so we all can play.
>Grumpy
>   87 GN, almost stock, Bassett Wheels, and it is an E Coupon ride
>   Mr Vader, your ride is ready............
>
>
>
>----- Original Message -----
>From: <cwagner@info2000.net>
>To: <gmecm@diy-efi.org>
>Sent: Friday, February 25, 2000 4:27 PM
>Subject: Re: Selectable chips & boost programming
>
>
>> I would like a copy too.
>>
>>
>> On 25 Feb 00, at 15:47, Keith wrote:
>>
>> > can you send it my way too. I'd like to make one also..
>> > Thanks
>> > Keith
>> >
>> > Programmer wrote:
>> > >
>> > > Hmmm...guess I'll have to do a schematic and send it your way and see
>if
>> > > I've got it right <g>...
>> > >
>> > > Thanks !!
>> > >
>> > > LW
>> > >
>> > > >Don't have anything in hardcopy, but it used a 27C128 chip stock, so
>I used
>> > > >a 27C010, mapped all the similar address, Data, power and control
>lines to
>> > > >a 28 pin plug so the plug looked like a 27128 to the ECM. Took the 3
>> > > >additional address lines and ran them to a BCD thumbwheel switch,
and
>the
>> > > >Thumbwheel switch I believe grounded the lines when they were active
>(I
>> > > >could have that backwards...) and used pull-up resistors on the
lines
>to
>> > > >the switch. I loaded a program into the burner, set the switch on
the
>> > > >number I wanted that program to be in the chip, and burned it,
loaded
>the
>> > > >next bin, set the switch to where it was supposed to be and burned
>it, etc.
>> > > >You could switch programs on the fly without a hiccup out of the
>engine
>> > > >(unless you were screaming and selected valet or security mode!).
>Worked
>> > > great!
>> > > >
>> > > >
>> > > >===========================================================
>> > > >David Cooley N5XMT Internet: N5XMT@bellsouth.net
>> > > >Packet: N5XMT@KQ4LO.#INT.NC.USA.NA T.A.P.R. Member #7068
>> > > >We are Borg... Prepare to be assimilated!
>> > > >===========================================================
>> > > >
>> > >
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>> > --
>> > Keith Gill F.A.S.T.
>> > Riverview, FL
>> > '91 GMC Syclone #2173
>> > '75 Oldsmobile Hurst/Olds
>> > '92 Nissan Sentra SE-R
>> > http://www.mindspring.com/~keith455
>>
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