Help noob | matrix decoder ( synthesize a linear decoder as a decoder of columns and rows )

Hi,

That's because you are using the same names for the X signals. The input and output signal names should be different, whenever a signal is input to a comb logic/register etc. the output signal is effectively different from the input signal.

You should put different names for each signals like below and you won't see the error:

Let me know if you still see problems with your decoder matrix after making the above changes.

Regards,

Nurina