I move the u-boot patched from http://www.evidence.eu.com/content/view/104/169/   to my IXP460 board. There are some difference between ixdp465 board and my ixp460 board.  The cpu part number is different, my ixp460 board have 128MB ddr memory(MT46V32M16-6T ), and 16MB flash (JS28F128J3D75), but the ixdp465 have 64MB ddr (MT46V16M16-6T) and 32MB flash(RC28F256J3C125). I am sure that the UART selected by me is right. I did not change any code from evidence, I used the arm-linux-tools-20061213, the build is success. then I used the BintoS19 convert u-boot.bin to S19 style, write to the flash by OCDemon flash memory programmer.  but my ixp460 board had no any response from serial interface, my ixp460 board can work normally with REDBOOT, so the hardware have no problem. Could you tell me why? Thanks.