Emulators, EconoRom III

[Mark S. Riley]

Thanks, Ludis, I'd already figured I was wrong. That was entirely too easy,
had to be wrong. I just got through taking a few pictures of the circuit
boards to post if you'd like to see them. At this point, I think the cpu on
my board is labeled U1 and is a black top package with Delco 466 on the
bottom row. top is A61804 and the middle row with double size letters is
21633.
Many Thanks for being patient with a "newbie". I try to research the "right
way" first. I learned a long time ago, I can't put the smoke back
Mark



----- Original Message -----
From: "Ludis Langens" <ludis at cruzers.com>
To: <gmecm at diy-efi.org>
Sent: Monday, February 19, 2001 11:00 AM
Subject: Re: Emulators, EconoRom III


> "Mark S. Riley" wrote:
> >
> > http://www.cruzers.com/~ludis/c3pinouts.html#16032500   This is the 2732
> > schematic.
> > The reset line is the ~OE/VPP pin? Correct?
>
> NO!!!!!  Stop right there!  Don't hook that up!
>
> That's the EPROM pinout.  There is no "reset" signal on the EPROM.  Go
> here for an ECM schematic:
>
> http://www.cruzers.com/~ludis/1226864sheet1.gif
>
> The 16021633 chip is the CPU.  You'll find the reset signal there, and
> on a few other components.  Your U** and Q** numbers will be different.
>
> > The ER3 has 2 reset outputs. From the manual,
> >
> >  "RESET is an open emitter, ACTIVE HIGH output. /RESET is an open
collector,
> >  ACTIVE LOW output. Both signals are pulled to the in-active state via
very
> > weak
> > resistors. Connect the appropriate output to your target's RESET
circuitry."
>
> You'll want to use /RESET.
>
> --
> Ludis Langens                               ludis (at) cruzers (dot) com
> Mac, Fiero, & engine controller goodies:  http://www.cruzers.com/~ludis/
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