After a six-month battle with programmators, finally I was able to program the XC9572XL.
My super-hiper-mega-everything programmator had, and actually still has a bug in the software that does not allow to program the last two bits of the matrix.
I asked the producer to do a patch, but they ignored me.
In the meantime, I bought two cheap cable substitutes for programming Xillinx chips, but it was a complete failure. None of them work.
I sent a second request to the manufacturer. Again, no reaction.
Today I pissed off and hacked the software
Now it works perfectly
Another EnterMice has longer with the new XL chips, because the 5V versions have me come to an end.
Just in time.