ISE implement 遇到了问题

1. ERROR:MapLib:979 - LUT2 symbol
   
2.    "mysystem/mys_i/proc_sys_reset_0/proc_sys_reset_0/EXT_LPF/External_System_Reset_MB_Debug_Sys_Rst_OR_8_o1" (output
   
3.    signal=mysystem/mys_i/proc_sys_reset_0/proc_sys_reset_0/EXT_LPF/External_Syst
   
4.    em_Reset_MB_Debug_Sys_Rst_OR_8_o) has input signal "RESET" which will be
   
5.    trimmed. See Section 5 of the Map Report File for details about why the input
   
6.    signal will become undriven.
   
7. ERROR:MapLib:978 - LUT2 symbol
   
8.    "mysystem/mys_i/proc_sys_reset_0/proc_sys_reset_0/EXT_LPF/External_System_Reset_MB_Debug_Sys_Rst_OR_8_o1" (output
   
9.    signal=mysystem/mys_i/proc_sys_reset_0/proc_sys_reset_0/EXT_LPF/External_Syst
   
10.    em_Reset_MB_Debug_Sys_Rst_OR_8_o) has an equation that uses input pin I0,
    
11.    which no longer has a connected signal. Please ensure that all the pins used
    
12.    in the equation for this LUT have signals that are not trimmed (see Section 5
    
13.    of the Map Report File for details on which signals were trimmed).

输入未赋值?