i9plus HDMI

[koverg70]

I wanted to trie a little HDMI test (based on https://www.fpga4fun.com/HDMI.html) on my i9plus board, but there is a problem with it.
Some (almost all) HDMI pins are not conform to Xilinx Artix TMDS requirements. (See the table below!)

This kind of pin assignment causes Vivado to stop with this error:

[Vivado 12-1411] Cannot set LOC property of ports, the negative port (N-side)
'TMDSn[2]' of a differential pair cannot be placed on a positive package pin 'Y8' (IOBM)

The following table shows the problems: where the HDMI pin end with P and a FPGA TMDS type is N or the opposite.

HDMI	FPGA	TMDS TYPE
D2P	W7	N
D2N	Y8	P
D1P	AB7	P
D1N	Y7	N
D0P	AB6	N
D0N	AA5	P
CKP	AB5	N
CKN	AA4	P

How can this pinout problem be worked around? Do you have a working HDMI example for i9plus?

Thanks in advance!