On Thu, Apr 21, 2011 at 7:51 PM, Michael Watterson wrot= e: > On 21/04/2011 10:16, Xiaofan Chen wrote: >> I have an issue with the Xilinx Spartan 3E Starter Kit on-board >> USB JTAG. It is enumerated fine and recognized by Windows >> XP SP3 as the Platform Cable USB. But Impact (from Xilinx >> ISE Webpak 13.1) failed to detect it. >> >> However, a standalone Platform Cable USB (not the latest >> Platform Cable USB II) works just fine under 13.1. >> >> Any one has a similar board and similar problem? > I remember an issue with version 11 on XP pro and Spartan 3E starter > kit. Driver issues. I forget how I solved it., > > Obviously Xilinx don't know how to do a USB / JTAG driver reliably. > The driver is from Jungo (Windriver). There seems to be quite come complaints about the driver. I will try Windows Vista, Windows 7 and also check with Xilinx. Obviously there are only handful of people in the world who are experts in Windows driver development (USB driver included) so I will not blame Xilinx. There are only 8 MVPs in this category now and Microsoft is going to kill this category. https://mvp.support.microsoft.com/communities/mvp.aspx?product=3D1&competen= cy=3DDriver+%26+Kernel+Development On the other hand, there are 258 MVPs for Visual C#, 70 MVPs for Visual C++ and 119 for VB. --=20 Xiaofan --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .