Hi Laurent, I think it is not true for new libftdi version.
Also I think it is not a good idea using your modified binary. Then I few more comfortable using Xverse Signalizer on Linux, it works correctly with standard libftdi. Unfortunately it is not high speed USB. Don't get me wrong, I don't have any relation with Xverse and I think JTAGkey-2 is a great device, you only need add better support to libftdi since many openocd user are on Linux. Just my 2 cents, Alan On 3/10/10, Laurent Gauch <laurent.ga...@amontec.com> wrote: > Hi, > > The NXP LPC2468 provide RTCK. > Also, the Amontec JTAGkey-2 provides RTCK support, but this must be > activated in your openocd configuration file . > Note: the Amontec JTAGkey does not provides RTCK support. > > The advantage of the RTCK is that you can try to up the JTAGkey-2 TCK > frequency to his maximum 30MHz. The LPC2468 will regulate the TCK > frequency by RTCK. > With this mechanism, you are sure to go as fast as your JTAG chain > allows you. > > For sure with using jtag_rtck you will get better performance. > > Also, for windwos, you should use our new driver from > http://www.amontec.com/download/amontec-jtagkey-driver-d2xx-20091124.zip > > This new driver is signed and microsoft WHQL certified. It is signed for > both 32 bit and 64bits OS from XP to windows 7 and server 2008 . > It works for all JTAGkey dongles, and it is based on FTDI d2xx driver. > > Actually, the FTDI d2xx driver is still much faster than LIBFTDI + > LIBUSB ... > > If you are Linux only try using FTDI d2xx driver ;-) ! > But the actual linux d2xx driver do not provide the same performances as > the windows performance. > > Regards, > Laurent Gauch > http://www.amontec.com > > >> Custom LPC2468 HW with SST 39VF6401B flash. >> >> -----Original Message----- >> From: Øyvind Harboe [mailto:oyvind.harboe at zylin.com >> <https://lists.berlios.de/mailman/listinfo/openocd-development>] >> Sent: 10. marts 2010 09:41 >> To: Flemming Futtrup >> Cc: Alain Mouette; openocd-development at lists.berlios.de >> <https://lists.berlios.de/mailman/listinfo/openocd-development> >> Subject: Re: [Openocd-development] Amontec JtagKey2 ?? >> >> >/ I our company we use both Amontec Tiny and Key2 and I have not seen >> > much >> />/ speed difference(could be target HW limitations or my lack of skills >> but >> />/ we achieve following flashload rates - tiny: 43 kb/s - key2: 51.6 >> kb/s). >> / >> What target? >> >> -- >> Øyvind Harboe >> 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 > _______________________________________________ Openocd-development mailing list Openocd-development@lists.berlios.de https://lists.berlios.de/mailman/listinfo/openocd-development
