[Gmecm] On the fly tuning

[Darren Freed]

Yup - connected it to the edge connector.  I used CS8 for the CE signal and CS9 for the OE signal.  Both of these chip selects aren't used in the stock code.  The SRAM is addressed to $B0000 and the address lines are connected as in the efi332 project (ie leaving A1 not connected).  It worked well - no troubles at all.  I just need to work on the PC software now, to make it more user friendly.  Unfortunately I'm over in the UK now for a year, away from my ECM bench.  So everything for the next year will be PC programming stuff.

On another note, I've been looking at the DLC routines quite abit in a variety of V6 and V8 code, from '96 to '04.  It seems pretty well conserved throughout, which is good news in terms of developing an interface and programming for datalogging/reflashing.  Although my SCI stuff works well for me, its not particularly useful to anyone else (I suspect).

Darren


----- Original Message -----
From: Steve Ravet <Steve.Ravet at arm.com>
Date: Wednesday, June 28, 2006 0:06 am
Subject: RE: [Gmecm] On the fly tuning

> 
> 
> > -----Original Message-----
> > From: gmecm-bounces at diy-efi.org 
> > [gmecm-bounces at diy-efi.org] On Behalf Of Darren Freed
> > Sent: Sunday, June 11, 2006 1:12 PM
> > To: gmecm at diy-efi.org
> > Subject: [Gmecm] On the fly tuning
> > 
> > So I'm one step closer to on the fly tuning with a GM OBDII 
> > pcm.  I've added an additional 16k sram and am able to write 
> > to it and read from it with SCI(ALDL) type comms - ie modify 
> > tables on the fly.  This is similar to what is done with the 
> > efi332 project.
> 
> Darren, where (physically) did you connect the SRAM?  To the edge
> connector?  Did you use an unused chip select output, or did you 
> replacean existing item in the CPU memory space?
> 
> --steve
> 
> 
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