I want to know the max speed of NIOS ii based on cyclone iii EP3C120N780C

Thank you very much,BadOmen! The NIOS II/f is now working on the 166.7mhz system clock.I just constraining the input clock,altpll and seg7led I/O port obey your suggestion.But the TimeQuest still report mass unconstrained paths:

--1)Setup Analysis:

Unconstrained Input Ports:(1)altera_reserved_tms:No input delay, min/max delays, or false-path exceptions found; (2)altera_reserved_tdi:No input delay, min/max delays, or false-path exceptions found.

totally 63 unconstrained paths.

Unconstrained Output Ports:(1)altera_reserved_tdo:No output delay, min/max delays, or false-path exceptions found.

totally 1 unconstrained paths.

--2)Hold Analysis:

The unconstrained paths are the same as above.

I wonder at the NIOS II/f is working under so many unconstrained paths.

How to clear these unconstrained paths?

What's the altera_reserved_tms,_tdi,_tdo meaning?