Re: 747 Rom Emulator / design

[rrauscher@nni.com]

Wow, Steve, this is great. A fuzzy logic self tuning setup
would be the cats meow. Neural network based at that! When
do you think you'll have it done? Heck, gm has notten' on us.

<g>'s all around. . .

BobR.

>Exactly.  For ecms like the 7747 and it's slow aldl, this could be nice.
>I didn't want to talk out loud on the things I'd like to do, 'cause then
>we would end up with a big discussion on how to include all the features
>in the world, such as fuzzy logic based neural network auto tuning of the
>maps, etc, and nothing would get done.  Besides, it would make me look bad

>if I never got around to finishing :-)
>
>- Steve
> Still trying to find time to read the xilinx manual I got last night
>
>On Thu, 27 Jul 2000, rr wrote:
>
>> 
>> Hmm, other things? Maybe mirror the ecm ram and send the
>> data out the serial link to the laptop?
>> 
>> BobR.
>> 
>> Steven Ciciora wrote:
>> 
>> > On Thu, 27 Jul 2000, rr wrote:
>> >
>> > >
>> > > Dual port ram is really not required. It's expensive and can be
>> > > tough to get. Remember that the ecm's bus cycle time is almost
>> > > a usec. Some 100 to 150 nsec SRAM can easily be updated
>> > > within a part of the cycle.
>> >
>> > But isolating the RAM from the ecm bus and from the PIC bus takes a
>> > bunch of 20 pin chips.  This is why I bought a Xilinx development system

>> > (It was delivered today; can hardly wait to get home!).
>> >
>> > >
>> > > Another way to look at it is: Does it matter if the ecm goes into
>> > > limp when your updating the ram, you can't be driving at
>> > > the same time your punching keys on a laptop.
>> > >
>> > > BobR.
>> >
>> > There are _other_ things I want to do, besides an eprom emulator :-)
>> >
>> > - Steven Ciciora
>> >
>> >
>> 
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