Technical data

Setting up libraries for group use
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Tips and Techniques ModelSim EE/PLUS Reference Manual
2
When you return to work the next day after running several batch jobs, you can start
up VSIM in its viewing mode with this command and the appropriate
.wav
files:
vsim -view wavesav1.wav
Now you will be able to use the Waveform and List windows normally.
Setting up libraries for group use
By adding an “others” clause to your
modelsim.ini
file, you can have a hierarchy
of library mappings. If the Model
Sim
tools don’t find a mapping in the
modelsim.ini
file, then they will search the library section of the initialization file
specified by the “others” clause. For example:
[library]
asic_lib = /cae/asic_lib
work = my_work
others = /usr/modeltech/modelsim.ini
Bus contention checking
Bus contention checking detects bus fights on nodes that have multiple drivers. A
bus fight occurs when two or more drivers drive a node with the same strength and
that strength is the strongest of all drivers currently driving the node. The
following table provides some examples for two drivers driving a std_logic signal:
Detection of a bus fight results in an error message specifying the node and its
drivers current driving values. If a node's drivers later change value and the node
is still in contention, a message is issued giving the new values of the drivers. A
driver 1 driver 2 fi
g
ht
ZZno
00yes
1Zno
01yes
L1no
LHyes