works in testbench, but not on the board [IP UART TX and RX]

[Altera_Forum]

I just designed an ip UART TX and RX simple. It work in testbench but not on the board. Please tell me why? Thanks

[Altera_Forum]

I didn't get through your complete code, but I recommend you use a clock in the state machine in RX/TX modules. 

The always @ ( * ) may work with simulator, but it could make a mess in actual hardware.

[Altera_Forum]

I think alway@(*) it genarate like combination circuits. I wil considerate. thanks you for reply