Re: Selectable chips & boost programming

[Keith <kgil1@tampabay.rr.com>]

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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