checkpoint

The checkpoint command saves the state of your simulation. The checkpoint command saves the simulation kernel state, the vsim.wlf file, the list of the HDL items shown in the List and Wave windows, the file pointer positions for files opened under VHDL and the Verilog $fopen system task, and the states of foreign architectures. Changes you made interactively while running vsim are not saved; for example, macros, virtual objects, command-line interface additions like user-defined commands, and states of graphical user interface windows are not saved. Also, toggle statistics (see the toggle report command) are not saved.

Once saved, a checkpoint file may be used with the restore command during the same simulation to restore the simulation to a previous state. A VSIM session may also be started with a checkpoint file by using the vsim -restore command (-627).

Compression of the checkpoint file is controlled either by the CheckpointCompressMode variable in the modelsim.ini file or by the -nocompress argument to vsim.

Syntax

checkpoint

<filename>

Arguments

<filename>

Specifies the name of the checkpoint file. Required.

See also

restore, restart, vsim; and see "The difference between checkpoint/restore and restarting" for a discussion of the difference between restart and checkpoint/restore.

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