ModelSim SE User's Manual - Electrical and Computer Engineering

UM-488 20 - Tcl and macros (DO files)
ModelSim SE User’s Manual
This will delete the file "myfile.log."
You can also use the transcript file command to perform a deletion:
transcript file ()
transcript file my file.log
The first line will close the current log file. The second will open a new log file. If it has
the same name as an existing file, it will replace the previous one.
Making macro parameters optional
If you want to make macro parameters optional (i.e., be able to specify fewer parameter
values with the do command than the number of parameters referenced in the macro), you
must use the argc (UM-542) simulator state variable. The argc simulator state variable
returns the number of parameters passed. The examples below show several ways of using
argc.
Example 1
This macro specifies the files to compile and handles 0-2 compiler arguments as
parameters. If you supply more arguments, ModelSim generates a message.
switch $argc {
0 {vcom file1.vhd file2.vhd file3.vhd }
1 {vcom $1 file1.vhd file2.vhd file3.vhd }
2 {vcom $1 $2 file1.vhd file2.vhd file3.vhd }
default {echo Too many arguments. The macro accepts 0-2 args. }
}
Example 2
This macro specifies the compiler arguments and lets you compile any number of files.
variable Files ""
set nbrArgs $argc
for {set x 1} {$x