WOLFRAM SYSTEM MODELER
    UX014-valued subtype of IEEE 1164 STD_ULOGIC type  | 
SystemModel["Modelica.Electrical.Digital.Interfaces.UX01"]

This information is part of the Modelica Standard Library maintained by the Modelica Association.
Code Table:
| Logic value | Meaning | 
| 'U' | Uninitialized | 
| 'X' | Forcing Unknown | 
| '0' | Forcing 0 | 
| '1' | Forcing 1 | 
| 'U' | 
         U Uninitialized  | 
    
|---|---|
| 'X' | 
         X Forcing Unknown  | 
    
| '0' | 
         0 Forcing 0  | 
    
| '1' | 
         1 Forcing 1  |