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? > 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. -- Øyvind Harboe Visit us at Embedded World, March 2nd-4th. IS2T's stand, HALL 10 - 118 http://www.zylin.com/events_embeddedworld.html US toll free 1-866-980-3434 / International +47 51 63 25 00 http://www.zylin.com/zy1000.html ARM7 ARM9 ARM11 XScale Cortex JTAG debugger and flash programmer _______________________________________________ Openocd-development mailing list Openocd-development@lists.berlios.de https://lists.berlios.de/mailman/listinfo/openocd-development
