Bidirectional PIO reset value

Hi guys,

I am using bidirectional PIOs with width=1 and no interrupt. But when I run the NIOS software, at reset PIOs registers do not have the expected value (0x0): data=0x41 (0x0 specified at system generation), direction=0x40 (instead of 0x0), interrupt=0x40 (instead of 0x0).

Is there some specific setting to apply to quartus when using bidirectional PIOs?

Thanks.