Using tristate bridge with de0 nano (cyclone IVe

Hello,

I try since a couple of days to get cs, read and write signal on outputs of my de0 nano board.

The goal is to drive a motor controller (LM628) which needs ck 8Mhz, cd, rd ,wr and a 8 bits data bus

For the ck it's ok. I use a altpll function under Quartus.

For the other signal I have created under Qsys:

Clock source (50Mhz)

Nios2/e processor

Generic Tristate controller

Tristate Conduit Bridge

I take care of the links between each block.

They have all the same clock. No error message during generation.

Under Eclipse I write a small loop which make a write then a read on GENERIC_TRISTATE_CONTROLLER_0_BASE

Then I run the program ... but nothing on outputs! cs stay at 3V3.

Someone has an idea on this problem?

I see a note (2011) that we have to put a Tristate conduit Pin sharer on some kind of Cyclone. I tried but no change.

Thank you per advance for your help

Serge