non block

[Altera_Forum]

plese help me check"DataInVld" and "DataIn"...,they are driven more than one time,is it dangerous?

[Altera_Forum]

It isn't dangerous. I'm not a Verilog expert, but I believe that when you are in an 'always' block, the statements ale taken sequentially, not concurrently. In that case, you can have several assignments in the block, and the last valid one wins.

[Altera_Forum]

--- Quote Start ---  It isn't dangerous. I'm not a Verilog expert, but I believe that when you are in an 'always' block, the statements ale taken sequentially, not concurrently. In that case, you can have several assignments in the block, and the last valid one wins.  --- Quote End ---     Hi,  as long as you are using the non-blocking assignment it behaves like Daixiwen says. The evaluation take s place at the end of the cycle and the last assignment wins, but maybe you can re-write your code in order to make it easier to read. E.g a defalut should be a "default" without an exception.  Kind regards  GPK

[Altera_Forum]

thanks for your kindly help! 

it changes my known about verilog.