User`s manual

ModelSim Xilinx User’s Manual Design Libraries 2-23
2 - Design Libraries
Chapter contents
Design library contents . . . . . . . . . . . . . . . . . . 24
Design unit information. . . . . . . . . . . . . . . . . 24
Design library types . . . . . . . . . . . . . . . . . . . 24
Library management commands. . . . . . . . . . . . . . . . 25
Working with design libraries . . . . . . . . . . . . . . . . 25
Creating a library . . . . . . . . . . . . . . . . . . 25
Viewing and deleting library contents . . . . . . . . . . . . . 27
Assigning a logical name to a design library . . . . . . . . . . . 29
Moving a library . . . . . . . . . . . . . . . . . . 31
Specifying the resource libraries . . . . . . . . . . . . . . . 32
VHDL resource libraries . . . . . . . . . . . . . . . . 32
Predefined libraries . . . . . . . . . . . . . . . . . . 32
Alternate IEEE libraries supplied . . . . . . . . . . . . . . 33
Regenerating your design libraries . . . . . . . . . . . . . . 33
VHDL has a concept of a library, which is an object that contains compiled design
units; libraries are given names so they may be referenced. Verilog designs
simulated within ModelSim are compiled into libraries as well. To simulate an
HDL design using ModelSim, you need to know how to create, compile, maintain,
and delete design libraries as described in this chapter. For additional information
on ModelSim "Library management commands"
(2-25) introduced in this chapter
see "ModelSim Commands"
(CR-11).