The problem occurs when I try to configure fpga in master serial mode:
My platform is ise10.1.03, using platform cable USB, xilinx platform flash is xcf04s, the mode selection pin M[2:0] is set to be 000.
After programming the xcf04s, iMPACT says it is programmed successfully. But when I press the PROG button to configure the spartan-3e, the DONE led is not lit and it seems the data in the platform flash is not loaded into FPGA.
Did anyone here once have this problem ? And how did you solve it? It haunts me like a couple days now.