$date
23-Sep-2003 14:38:11
$end
| Data and time the file was generated. |
$version Link for ModelSim version
1.0 $ end
| Version of the VCD block that generated the file. |
$timescale 1 ns $ end
| The time scale that was used during the simulation. |
$scope module manchestermodel $end
| The scope of the module being dumped. |
$var wire 1 ! Original Data [0] $end
$var wire 1 " Recovered Clock [0] $end
$var wire 1 # Recovered Data [0] $end
$var wire 1 $ Data Validity [0] $end | Variable definitions. Each definition associates a signal
with character identification code (symbol). The symbols are derived from
printable characters in the ASCII character set from ! to ~. Variable definitions
also include the variable type (wire) and size in bits. |
$upscope $end
| Marks a change to the next higher level in the HDL design
hierarchy. |
$enddefinitions $end
| Marks the end of the header and definitions section. |
#0
| Simulation start time. |
$dumpvars
0!
0"
0#
0$
$end | Lists the values of all defined variables at time equals
0. |
#630
1!
| The starting point of logged value changes. Variable values
are checked at each simulation time increment and are logged if a change occurs.
This entry indicates that at 63 nanoseconds, the value of signal Original
Data changed from 0 to 1. |
.
.
.
#1160
1#
1$ | At 116 nanoseconds the values of signals Recovered
Data and Data Validity changed from 0 to 1. |
$dumpoff
x!
x"
x#
x$
$end
| Marks the end of the file by dumping the values of all variables
as the value x. |
