PPS csync is asserted one 125MHz ref clock cycle before the actual PPS. It can be used for aligning another signal to the PPS.

platform/xilinx: add generics to Xilinx platform to select which GTP channel to use (defaults to ch1)

wrpc-sw binaries compiled from commit:
a2dd8bb9: spec_defconfig: remove spaces from built-in init script

txts -> dio_p/n_o[2] (= Lemo 3)
rxts -> dio_p/n_o[1] (= Lemo 2; formerly used for 62.5 MHz RefClk)

Since generic fifo has been fixed in general cores, the threshold values have been corrected accordingle and the threshold for transmission needn't have an offset to work

wrpc-sw:
24ebdb55: print also built-in init script with _init show_ cmd

Final version of the testbench.Fully working with 6 different tests: flush, timeout, tx_thr, tx_max words, fxd latency, drop frames.

Changed data type block so it no longer has wrd_cnt, first and last_wrd fields. Not really required anymore

Working testbench. Runs 5 tests. Bug: does not cope with multiple block frames. only single block frames.

there were some unfortunate sequences of characters that made to fail
the compliation of the auto-generated altex documention. These
unfortunate sequences were removed

Work in progress. Rx tb will soon be deleted. Tx tb will be main one. Tx features testing working. Rx features must be fixed and also features relating to link quality (delay, drop frames, etx)