Encore SIM EDITOR SOFTWARE User's Guide Page 193

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6-9
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Note that HR values only occur when a signal has more than one
driver. A port value - means that VirSim only has the resulting net
value and not the values of individual drivers. Add +vpddrivers to
the simulator command line to save this data.
Note:
When a net is driven by multiple instances, the net shows the
resultant value, while each driving port shows a hierarchically
resolved (HR) value. The HR value is the net contribution from
within this instance. For example, if the net resultant value should
be 0 but is X and the two driving ports show HR:0 and HR:1, then
we know to debug the 1 path. An open wire without fanins may
still be an input to control statements such as @ (posedge clock),
if (cnt > 0) etc. Drag the wire into a SW and use the Find arrows
to locate its uses. When examining output port values from
assignments, be aware that they reflect the current value of the
driven net and not the current or scheduled value of the
expression. Control statements and delays will need to be
considered to determine if that assignment has affected the net
value.
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