[Diy_efi] Continuing the chip switcher "problem"

mbelloli at speedymotorsports.com mbelloli at speedymotorsports.com
Mon Feb 14 15:52:17 GMT 2005


Will,
     Unforunately the image is everything in one.  Both code and tables. 
I have put a link to the 29c010 on my webpage as well.
       http://home.comcast.net/~hexibot43/ChipEnableLogic.htm

     I had gone to the Pic Chip because I had a lot of other ideas I'd
like to add as time goes by.  I wanted to be able to change to the
code on the fly in one bank while running on another bank.  I could
then switch it in after the changes and the checksum were calculated.
 And I wanted to have a nice display because none of my friends
understands what I am doing, but they understand plain english when
it is in front of them.  I thought to maybe use a graphic display
later, which would allow me to incorporate displaying the tables for
fuel and spark.  I also want to later add datalogging capability.
     I am thinking could I use this latch with my pic?  I would supply the
new hi order address I would like to it, and when the time is right
the latch would do the actual switch for me?  That way take the
problem of the switching completely away from my pic.
     I have another working computer that I have not modified at the shop.
 I am going to go put my DSO on the Not OE line and see what I get.

Thanks to everyone,

Marcello









> Marcello,
>
> A further thought on this - can we assume that what you have in the
> 29C010
> is the fuel / ignition map ONLY, i.e. no executable code?  If  it contains
> both, then more complexity is needed, because you only want to  assert the
> altered
> higher address lines when a fuel / ignition lookup is being  performed.
> But
> you could still use the simple approach Bevan & I are  advocating if you
> have
> four images of the executable code as well, each with  their own
> respective
> map but otherwise identical.
>
> Regards
>
> Will Cowell
> _______________________________________________
> diy_efi mailing list
> diy_efi at diy-efi.org
> http://lists.diy-efi.org/mailman/listinfo/diy_efi
>

_______________________________________________
diy_efi mailing list
diy_efi at diy-efi.org
http://lists.diy-efi.org/mailman/listinfo/diy_efi



More information about the Diy_efi mailing list