Thanks, I tried both. cblsrv seems to support only:
dlc5 Xilinx Parallel III bb Altera ByteBlaster
When I try using it with iMPACT, it finds no cable.
cblsrv reports:
Cable is 'Xilinx Parallel III (0x378)'
I also tried xilprg, but the DSP FPGA is not in it's list of supported devices.