EFI from AT bus plug in

[DAVE MORRILL HPL DESIGN ENG 207-775-8574]

Al,
	Great project! I too am interested in looking at the schematics, also
interested in what you did for software.  Myself and a friend are just getting
started w/ our efi project and have been evaluating  existing
OEM systems for modification to suit our needs, but your idea sounds like it may
 be a more flexible approach as well as being easily expanded on.  

Best,
	Dave 
dmorrill%spf.dnet at gpo.nsc.com

From:	GPO::"owner-diy_efi-outgoing at coulomb.eng.ohio-state.edu" 31-JUL-1995 12:43:48.86
To:	DIY_EFI at coulomb.eng.ohio-state.edu
CC:	
Subj:	Re: efi from an at bus plug in board

>I've been thinking about doing efi using a board plugged into an AT bus on
>a pc...

Last year I designed and built an EFI system using just such a board.  I used
a PC as the brain, and on the board I used a variety of "intelligent"
peripheral chips to handle RPM measurement, injector pulse-width timing and
sync, a 16-channel A/D converter, and a couple of dozen parallel inputs.  The
board was more of a concept test and software development platform than
anything else, but really works (the car ran well enough).  The nice thing
about it is that it's so programmable, it can be adapted to run (or control)
just about anything.  It was designed so that it would allow the car to run
even if the control program was interrupted, and therefore could use a really
slow machine or program (great for development).  It uses about $25 worth of
parts and can even be proto-boarded.  Anyway, I'd be happy to share the
schematic (It was designed using OrCAD) and functional description with
anyone who is interested - Just let me know.

                                                - Al -

alipper at aol.com