On Monday 08 February 2010, Øyvind Harboe wrote:
> On Mon, Feb 8, 2010 at 11:31 PM, David Brownell <davi...@pacbell.net> wrote:
> > On Monday 08 February 2010, Ųyvind Harboe wrote:
> >> The reason why jtag_add_runtest() is so much faster than
> >> pathmove is that jtag_add_runtest() can be queued in
> >> a hardware fifo.
> >
> > But does this guarantee the same path transition?
> 
> Ah.... that's the other half of the problem, isn't it?

That's why pathmove() is used...


> > The ARM11 debug TAP cares about specific paths when
> > the host is using the ITR mechanism ...
> 
> I think this patch (and the branch I created tonight) was helpful
> in pointing out where the performance problems are.
> 
> Something to tinker with post 0.4....
> 
> 100kBytes/s @ 8MHz is ~1:3 of arm7/9 performance, so it isn't
> disastrously bad.
> 

Is that using the DCC?
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