Assembled unit:

First test on megatune (a megasquirt tuning program):

Controlling 4 injectors? I don't see the drivers...

Yes, 4 injectors , at that moment i use mc33385 (at upper left side) to drive injectors independent.
Old board use 2 pieces VNP5n07 - smartfet , one transistor drive 2 injectors per bank.

Are you running your fuel mixture more rich or more lean ...

http://www.fotosik.pl/pokaz_obrazek/pel ... d2291.html

Run at 6.5536 MHz. On board - 29EE010 flash rom, 82c54 - timer , ADC0809 - A/D converter, MAX 232 , 74hct4060.

Look at my new engine - Fiat DOHC running on W65c265 EFI controller:

http://www.youtube.com/watch?v=UqMewyWfmo0

I have a problem at my new prototype build on w65c265. My project use this input for counting and time checking beetwen a pluses form crank sensor on a engine.
This routine work correctly at older project based on 6502 and 8520 CIA (from Amiga 500).
I read a datasheet from WDC , but i still dont ...

If you thinking about aftermarket - i think look at megasquirt project on the net - its simple, full schematics and diagrams, source code and a lot of english language forums.
That project based on motorola 68hc908 mikrocontoller - asm code its verry similar to 6502 - i based my code for fuel ...

This car hasn't fuel injection but carb at series, only ignition are electronic - have distributor and mechanical ignition advance.
I do a intake mainfold , fuel rail , mout sensors - crank position and pulse wheel (look like GM type DIS), 1bar map sensor, coolant sensor , air intake temperature ...

here is photos of my prototype ond some info , but only at polish language.

http://www.motonews.pl/forum/?op=fvt&t= ... c=248&f=12

I wait for any question or opinion at this project

Look at http://www.atariarea.histeria.pl/x-asm/
It's good atari xl assembler for DOS , but ca generate binary files good as rom , and can fill area between 2 orgs !
I use it to assembly my rom files